ISO/FDIS 20500-5
(Main)Mobile road construction machinery — Safety — Part 5: Specific requirements for paver-finishers
Mobile road construction machinery — Safety — Part 5: Specific requirements for paver-finishers
Machines mobiles pour la construction de routes — Sécurité — Partie 5: Prescriptions spécifiques pour finisseurs
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FINAL DRAFT
International
Standard
ISO/TC 195
Mobile road construction
Secretariat: SAC
machinery — Safety —
Voting begins on:
2025-11-05
Part 5:
Specific requirements for paver-
Voting terminates on:
2025-12-31
finishers
Machines mobiles pour la construction de routes — Sécurité —
Partie 5: Prescriptions spécifiques pour finisseurs
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
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TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
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MADE IN NATIONAL REGULATIONS.
Reference number
FINAL DRAFT
International
Standard
ISO/TC 195
Mobile road construction
Secretariat: SAC
machinery — Safety —
Voting begins on:
Part 5:
Specific requirements for paver-
Voting terminates on:
finishers
Machines mobiles pour la construction de routes — Sécurité —
Partie 5: Prescriptions spécifiques pour finisseurs
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2025
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ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Safety requirements and/or protective/risk reduction measures . 4
4.1 General .4
4.1.1 Context .4
4.1.2 Specific relation to ISO 20500-1 .4
4.2 Visibility .4
4.2.1 General .4
4.2.2 Visibility performance criteria .4
4.2.3 Visibility performance criteria for the rectangular boundary RB and side
boundary SB .5
4.2.4 Additional visibility performance criteria for the rectangular boundary RB and
front boundary FB in combination with a hopper insert .8
4.3 Operator's station .10
4.4 Operator's seat .10
4.5 Controls and indicators.10
4.6 Conveyors .10
4.7 Access systems to operator's station and to maintenance points .10
4.8 Protection .10
4.9 Signal devices and warning signs .11
4.10 Electro-magnetic compatibility (EMC) .11
4.11 Noise .11
4.12 Vibration .11
4.13 Paver-finishers with emission reducing device (ERD) .11
4.14 Paver-finishers equipped with a binder spraying system . 12
4.14.1 Binder heating system . 12
4.14.2 Pipes and hoses for hand lances . 12
4.14.3 Binder filler openings. 12
4.14.4 Binder tank breathing . 12
5 Verification of the safety requirements and/or protective/risk reduction measures .12
6 Information for use — Operator´s manual .13
Annex A (normative) Noise test code for paver-finishers .15
Annex B (normative) Emission reducing device (ERD) – Performance requirements and test
procedures .21
Annex C (informative) Examples of paver-finishers .40
Annex D (informative) List of significant hazards .45
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered .48
Bibliography .52
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 195, Building construction machinery and
equipment, in collaboration with the European Committee for Standardization (CEN) Technical Committee
CEN/TC 151, Construction equipment and building material machines - Safety, in accordance with the
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
A list of all parts in the ISO 20500 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
Introduction
This document is a type C standard as stated in ISO 12100.
This document is of relevance, in particular, for the following stakeholder groups representing the market
players with regard to machinery safety:
— machine manufacturers (small, medium and large enterprises);
— health and safety bodies (regulators, accident prevention organisations, market surveillance, etc.).
Others can be affected by the level of machinery safety achieved with the means of the document by the
above-mentioned stakeholder groups:
— machine users/employers (small, medium and large enterprises);
— machine users/employees (e.g. trade unions, organisations for people with special needs);
— service providers, e.g. for maintenance (small, medium and large enterprises);
— consumers (in case of machinery intended for use by consumers).
The above-mentioned stakeholder groups have been given the possibility to participate at the drafting
process of this document.
The machinery concerned and the extent to which hazards, hazardous situations or hazardous events are
covered are indicated in the Scope of this document.
When requirements of this type-C standard are different from those which are stated in type-A or type-B
standards, the requirements of this type-C standard take precedence over the requirements of the other
standards for machines that have been designed and built according to the requirements of this type-C
standard.
v
FINAL DRAFT International Standard ISO/FDIS 20500-5:2025(en)
Mobile road construction machinery — Safety —
Part 5:
Specific requirements for paver-finishers
1 Scope
This document, together with ISO 20500-1:—, deals with all significant hazards, hazardous situations and
events relevant to paver-finishers when used as intended and under the conditions of misuse which are
reasonably foreseeable by the manufacturer (see Annex D) associated with the whole lifetime of the machine
as described in ISO 12100:2010, 5.4.
The requirements of this document are complementary to the common requirements formulated in
ISO 20500-1:—. This document does not repeat the requirements of ISO 20500-1:— but supplements or
modifies the requirements for paver-finishers.
Lightning as a significant and relevant hazard is not covered in this document.
This document is not applicable to paver-finishers manufactured before the date of its publication.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 3744:2010, Acoustics — Determination of sound power levels and sound energy levels of noise sources using
sound pressure — Engineering methods for an essentially free field over a reflecting plane
ISO 11201:2010, Acoustics — Noise emitted by machinery and equipment — Determination of emission sound
pressure levels at a work station and at other specified positions in an essentially free field over a reflecting
plane with negligible environmental corrections
ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction
ISO 13857:2019, Safety of machinery — Safety distances to prevent hazard zones being reached by upper and
lower limbs
ISO 15878:2021, Road construction and maintenance equipment — Paver-finishers — Commercial specifications
ISO 20500-1:—, Mobile road construction machinery — Safety — Part 1: Common requirements
ISO 29042-4:2009, Safety of machinery — Evaluation of the emission of airborne hazardous substances — Part
4: Tracer method for the measurement of the capture efficiency of an exhaust system
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 12100:2010, ISO 15878:2021,
ISO 20500-1:— and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
paver-finisher
mobile self-propelled machine consisting of a tractor and a free-floating screed intended for the placement
and pre-compaction of the paving material using the floating/self-levelling screed method
Note 1 to entry: See Figures C.1 to C.8 for examples.
3.2
emission reducing device
ERD
system to extract or reduce emissions from bitumen or other volatile or suspended substances away from
screed area and from paver-operator’s stations by using suction vacuum pressure
3.2.1
ERD indicating device
means to visually provide to the operator the information, whether the ERD (3.2) is operating within the
designed operating-range
3.2.2
tracer gas test method
use of substances with an aerodynamic behaviour comparable to the pollutant under consideration and
which can be reliably measured
3.2.3
ERD design volume flow
Q
design
mean volume flow of air discharged by the ERD (3.2) and as specified by the manufacturer during design-phase
3.2.4
effective ERD volume flow
Q
effective
mean volume flow of air discharged by the ERD (3.2) as measured under specific test conditions
Note 1 to entry: The test conditions are specified in Annex B.
3.2.5
effective tracer gas volume flow
Q
SF_6
mean volume flow of SF injected into the ERD (3.2) either via direct injection, or via the injection lance
under specific test conditions
Note 1 to entry: The test conditions are specified in Annex B.
3.2.6
measured capture efficiency of an ERD
η
c
ratio of the mean concentration of tracer gas (3.2.11) measured in the ERD (3.2) discharge during the capture
efficiency test to the mean concentration of tracer gas measured in the ERD discharge during the 100 %
capture test
3.2.7
effective capture efficiency of an ERD
η
c,effective, EUT
average of several samples of the ratio of the mass-flow rate of a specified pollutant directly collected by the
ERD (3.2) to the uncontrolled mass-flow rate of this pollutant emitted from the machine with a Student-T-
correction for a confidence level of 95 % applied
Note 1 to entry: This value is the significant parameter of an ERD.
3.2.8
ambient gas concentration
C
C ’
concentration measured at the point of sampling when no tracer gas (3.2.11) is actually released
Note 1 to entry: These concentrations represent the background concentration and are used to correct the measured
concentration values C (3.2.9) and C (3.2.10) when determining the measured capture efficiency of an ERD,η (3.2.6).
2 3 c
C designates the pre-test ambient gas concentration whereas C ’ represents the post-test ambient gas concentration
1 1
once the purge cycle is complete.
Note 2 to entry: Each test requires determination of the ambient gas concentrations C and C ’. These values can be
1 1
higher than earlier ambient gas concentration measurements if precedent measurements have been carried out in
advance or if residual concentration of tracer gas is present.
Note 3 to entry: The purge cycle, if necessary, is made by chasing all tracer substances from the tracer injection circuit
using compressed air for several seconds (as the volume of the circuit is only a few cubic centimetres).
3.2.9
scaled tracer gas concentration
C
concentration measured at the point of sampling when the tracer gas (3.2.11) is directly released into the
ERD (3.2) and diluted by the system volume-flow
Note 1 to entry: This concentration is used as 100 %-reference-value for determining the measured capture efficiency
of an ERD, η (3.2.6).
c
3.2.10
ERD-characteristic tracer-gas concentration
C
concentration measured at the point of sampling when the tracer gas (3.2.11) is released at a characteristic
point (e.g. under the distribution auger) and diluted by the system volume-flow
Note 1 to entry: For an example of a characteristic point, see Annex B.
Note 2 to entry: This concentration is used as a calculation-value for determining the measured capture efficiency of an
ERD,η (3.2.6).
c
3.2.11
tracer gas
gas used for the purpose of the tests, that is non-toxic, chemically inert, low background concentration or
environmental interferences, and is easily measured at low concentrations
Note 1 to entry: Historically SF has been a commonly used tracer gas.
Note 2 to entry: Other tracer gases can be used if future research identifies an appropriate substitute.
Note 3 to entry: Tracer gas is described in Annex B.
3.2.12
equipment under test
EUT
representative paver-finisher (3.1) equipped with an ERD (3.2) establishing a test-set-up to carry out a valid test
Note 1 to entry: The valid test is described in Annex B.
3.3
hot mix asphalt
HMA
asphalt mix produced at temperatures between 140 °C and 190 °C
Note 1 to entry: Per Reference [1], hot mixes are produced at a temperature between 150 °C and 190 °C.
Note 2 to entry: Per Reference [2], conventional hot-mix asphalt (HMA) is typically produced at temperatures from
280 °F to 320 °F (140 °C to 160 °C).
3.4
binder spraying system
rigidly fixed attachment intended to spray automatically emulsion of binder (bitumen/emulsion) on the
road surface at a predetermined rate to formulate a film of bituminous binder before applying road building
material
Note 1 to entry: The system may consist of binder storage, pumps and spray bars which are fitted to the paver-finisher
(3.1). The system may be equipped with a heating system.
3.5
side boundary
SB
line on the ground reference plane located at 2 m distance from the left- and right-hand side of the outmost
edge of the basic machine
3.6
front boundary
FB
line on the ground reference plane located at 1 m distance from the front edge of hopper insert
4 Safety requirements and/or protective/risk reduction measures
4.1 General
4.1.1 Context
Paver-finishers shall conform to the safety requirements and/or protective/risk reduction measures of this
clause. In addition, the machines shall be designed according to the principles of ISO 12100:2010 for relevant
but not significant hazards which are not dealt with by this document.
4.1.2 Specific relation to ISO 20500-1
Paver-finishers shall conform to the requirements of ISO 20500-1:—, as far as not modified or replaced by
the requirements of this document.
4.2 Visibility
4.2.1 General
ISO 20500-1:—, 4.2 applies with the additions specified in 4.2.2 to 4.2.4.
4.2.2 Visibility performance criteria
The measurement results, when tested using the setup details as shown in Figures 1 to 4, shall show no
maskings or maskings smaller than or equal to the performance criteria with direct or indirect view as
specified in Table 1.
Paver-finisher shall be set up with hoppers folded up and screed walkways folded up (see Figures 3 and 4).
Table 1 applies in addition to ISO 20500-1:—, Table 3.
Table 1 — Visibility performance criteria
A B C D E F RB/SB
Basic width of tractor ≤ 1,4 m
Eye spacing 205 mm 205 mm 205 mm 205 mm 205 mm 205 mm 405 mm
Number and 1 time 0 0 1 time 1 time 1 time 300 mm
width of
700 mm 300 mm 700 mm 700 mm
masking
Basic width of tractor > 1,4 m
Eye spacing 205 mm 205 mm 205 mm 205 mm 205 mm 205 mm 405 mm
Number and 1 time 2 times 2 times 2 times 2 times 2 times 300 mm
width of
700 mm 300 mm 300 mm 700 mm 700 mm 700 mm
masking
or or or or or
1 time 1 time 1 time 1 time 1 time
700 mm 700 mm 1 300 mm 1 300 mm 1 300 mm
4.2.3 Visibility performance criteria for the rectangular boundary RB and side boundary SB
The measurement results shall show no maskings or maskings smaller or equal to the acceptable maskings
(300 mm) when evaluated using the eye spacing specified in Table 2 for the RB and where applicable in
addition for the SB and using the test object height Z for the SB and Y for each region RB as specified in
Table 2.
Table 2 — Vertical test object height by machine width, region of the RB and SB
Basic width of Side boundary SB Region of the RB
tractor
Front side Left-hand side Right-hand side Rear side
≤ 1,4 m No side boundary Y = 1,5 m Y = 1,5 m Y = 1,5 m Y = 1,5 m
required
X = 1,5 m
See Figure 2
> 1,4 m Z = 1,2 m Y = 1,5 m Y = 1,5 m Y = 1,5 m Y = 1,5 m
with SB = 2,0 m X = 1,0 m
See Figure 4 See Figure 3
Key
1 rectangular boundary
2 side boundary
A, B, C, D, E, F sectors of vision
Y Y-axis and forward direction of machine
Figure 1 — Setup of machines
Dimensions in metres
Key
X distance between machine and RB to the front
Y vertical test object height on the RB
1 filament position centre point (FPCP)
Figure 2 — Side view of a paver-finisher basic width < 1,4 m
Dimensions in metres
Key
X distance between machine and RB to the front
Y vertical test object height on the RB
H screed height (to be recorded)
1 filament position centre point (FPCP)
Figure 3 — Side view of a paver-finisher basic width > 1,4 m
Dimensions in metres
Key
Y vertical test object height on the RB
Z vertical test object height on the SB
Figure 4 — Front view of a paver-finisher
4.2.4 Additional visibility performance criteria for the rectangular boundary RB and front
boundary FB in combination with a hopper insert
The setup of the machine in combination with the hopper insert is shown in Figures 5 and 6, with a vertical test
object height Y = 1,5 m at the FB = 1 000 mm to the front and RB = 1 000 mm to the sides of the hopper insert.
In combination with a hopper insert when tested using the setup details as shown in Figures 5 and 6, the
measurement results shall show no maskings or maskings smaller or equal to the acceptable maskings
(300 mm) in RB and FB of the hopper insert area as shown in Figure 5.
NOTE 1 Measurements in operation mode are specified by the manufacturer (e.g. seat slewed out).
NOTE 2 The 12 m circle (sector A, parts of sectors B and C) is not relevant for this application since the paver-
finisher works directly behind a mobile feeder).
Key
1 paver-finisher
2 hopper insert
3 front boundary
4 rectangular boundary
5 filament position centre point (FPCP) (operator in slewed-out seating position)
Figure 5 — Top view of a paver-finisher in combination with a hopper insert
Dimensions in metres
Key
Y vertical test object height on the FB
1 filament position centre point (FPCP)
2 hopper insert
3 conveyor of a mobile feeder
Figure 6 — Side view of a paver-finisher in combination with a hopper insert
4.3 Operator's station
ISO 20500-1:—, 4.4 applies with the following exception:
— ISO 20500-1:—, 4.4.2, first paragraph, does not apply for paver-finishers;
— ISO 20500-1:—, 4.4.3, first paragraph does not apply for paver-finishers with an operating mass below
7 250 kg.
NOTE National regulations or regional requirements can apply making a sun-protection mandatory irrespective
of the weight of the paver.
4.4 Operator's seat
ISO 20500-1:—, 4.5.2 applies with the following addition:
According to ISO 7096, the vibration level at the driver seat is so low that this seat does not require a
suspension for the attenuation of transmitted vibration (see ISO 7096:2020, 1.4).
4.5 Controls and indicators
ISO 20500-1:—, 4.6 applies with the following addition:
— the extending or closing of the telescopic screed shall not be simultaneously activated from both the
operator's station and the remote control, if relevant;
— controls for the width adjustment of extendable screeds shall be designed in such a manner as to ensure
that they return to neutral when released (hold-to-run control); see also ISO 20500-1:—, 4.6.2.1.
4.6 Conveyors
ISO 20500-1:—, 4.8 applies with the following exemption:
Rigidly installed material conveyors inside the hopper do not need to conform to ISO 20500-1:—, 4.8.
4.7 Access systems to operator's station and to maintenance points
ISO 20500-1:—, 4.9 applies with the following exception and addition:
— the height of the first step (600 mm) for access to the operator's position may be exceeded in transport
position of the machine;
— ISO 20500-1:—, 4.9 does not apply for access systems leading to service points in the area of the hopper;
— walkways shall be fitted to cover the operating width of the screed. These walkways may be fitted directly
to the screed sections or by other means. These means may include a manually deployed walkway fixed
to the screed;
— the screed is considered as an alternative exit according to ISO 2867:2011, 4.3.
4.8 Protection
ISO 20500-1:—, 4.10 applies with the following addition:
— spreading augers shall be guarded in accordance with ISO 20500-1:—, 4.10 to prevent unintended access
to the auger along the width of the base machine, except at edges of the chassis where spreading augers
extend beyond the width of the base machine; in this case means shall be provided along the screeds to
minimize the risk;
— where the spreading augers extend beyond the width of the base machine, means (e.g. guard rails,
distance guards) shall be provided on the screeds to minimize the risk of inadvertent access;
NOTE The width of the base machine is identical to the tractor width.
— protective means (e.g. tying down or positive engagement) shall be taken to prevent hopper insert from
falling out of the hopper.
4.9 Signal devices and warning signs
ISO 20500-1:—, 4.15 applies with the following addition:
Extendable screeds fitted on paver-finishers which could form crushing or shearing zones during their
operation shall be fitted with yellow flashing lights. Those flashing lights shall be located close to the
crushing or shearing zones and shall be activated automatically when the screeds are extended or retracted.
NOTE Crushing or shearing zones can occur while extending the screed when operating the machine next to
external obstacles (e.g. wall).
4.10 Electro-magnetic compatibility (EMC)
ISO 20500-1:—, 4.18 applies with the following addition:
The antenna shall be located successively on the left- and right-hand sides of the paver-finisher, with the
antenna parallel to the plane of the longitudinal symmetry of the paver-finisher and in line with the seat
index point (SIP.)
4.11 Noise
ISO 20500-1:—, 4.19.1 applies with the following addition:
For the determination of the noise emission values, Annex A shall apply to paver-finishers.
For paver-finishers, the main sources of noise are the engine, the hydraulic components, the cooling system
and the working process (e.g. compaction by screed, conveying).
4.12 Vibration
ISO 20500-1:—, 4.20.1 applies with the following addition:
— for paver-finishers with an operating mass exceeding 7 250 kg, whole body and hand-harm emission
2 2
vibration at the driver workplace are generally below respectively 0,5 m/s and 2,5 m/s ;
NOTE When traversing from one side to the other side of the screed using the screed walkway, operators can be
exposed to high level of vibration due to the compaction system, when trespassing.
— for paver-finishers with an operating mass below 7 250 kg, technical solution shall be provided to isolate
the driver from vibration due to the compaction system (see also CEN/TR 15172-1:2005).
4.13 Paver-finishers with emission reducing device (ERD)
The paver-finisher exceeding an operating mass of 7 250 kg shall be equipped with an ERD system.
This system shall meet the requirements of Annex B. A visual device shall be fitted to indicate whether the
ERD is not operating within the designed operating-range (e.g. a simple differential pressure indication is
sufficient).
NOTE For applications using mixtures of asphalt-compounds it is recommended to install an emission reducing
device (ERD) when using hot mix asphalt (HMA).
4.14 Paver-finishers equipped with a binder spraying system
4.14.1 Binder heating system
Heating systems shall be equipped with an automatic device to control the temperature of the road building
material.
The following shall be provided both for direct and for indirect heating:
— temperature gauge for the road building material;
— heat transfer fluid (oil) temperature gauge shall be provided for indirect heating;
— temperature control for the road building material up to a maximum permissible temperature;
— devices which automatically shut down fuel supply on loss of flame.
For heating systems using liquid gas, ISO 20500-1:—, Annex C applies.
4.14.2 Pipes and hoses for hand lances
For pipes with an operating pressure of more than 5 MPa (50 bar) and/or a temperature of over 50 °C used
for hand-lances, a protection (e.g. metallic helix) of at least 1 m is necessary. The protection shall be fitted on
the end (hand-lance) of the pipe.
4.14.3 Binder filler openings
Filler openings having a diameter exceeding 240 mm shall be provided with guard bars which shall be
demountable for maintenance by the use of tools. The permitted maximum spacing of the bars shall be
180 mm in accordance with ISO 13857:2019, 4.3.
4.14.4 Binder tank breathing
Non-pressure type bitumen tanks shall be provided with at least one permanently open breather vent. The
minimum internal diameter shall be:
— 25 mm for tanks with a capacity less than 300 l;
— 50 mm for tanks with a capacity equal or above 300 l.
The breather shall be easy to check and located into the hopper such that spillage of bitumen into
environment is minimized in the event of unintended overfilling.
5 Verification of the safety requirements and/or protective/risk reduction measures
Safety requirements and/or protective/risk reduction measures of Clauses 4 and 6 shall be verified
according to Table 3.
Table 3 sets out verification methods which shall be applied for each safety requirement in this document.
Where X(s) is indicated in the Table, the corresponding verification method(s) shall be applied.
Table 3 shall be read in conjunction with the corresponding clauses/subclauses.
Table 3 applies in addition to ISO 20500-1:—, Table 3.
Table 3 includes the following verification methods:
a) calculation: to establish that the requirements of this document have been met;
b) visual verification: to establish that something is present (e.g. a guard, a marking, a document);
c) measurement: to show that the required numerical values have been met (e.g. geometric dimensions,
safety distances, resistance of insulation of the electric circuits, results of physical tests);
d) functional tests: to show that the adequate signals intended to be forwarded to the main control
system of the complete machine are available and conform to the requirements and the technical
documentation;
e) special verification: by reference to a standard which is mentioned in the corresponding clause/
subclause.
Table 3 — Verification of safety requirements and/or protective/risk reduction measures
Clause/ Title a) b) c) d) e)
subclause Cal- Visual Meas- Func- Spe-
number cula- veri- ure- tional cial
tion fica- ment test veri-
tion fica-
tion
4 Safety requirements and/or protective/risk reduction measures
4.1 General
4.1.1 Context X
4.1.2 Specific relation to ISO 20500-1 X
4.2 Visibility X X
4.2.1 General X
4.2.2 Visibility performance criteria X
4.2.3 Visibility performance criteria for the rectangular boundary RB and side bounda- X
ry SB
4.2.4 Additional visibility performance criteria for the rectangular boundary RB and X
front boundary FB in combination with a hopper insert
4.3 Operator's station X
4.4 Operator's seat X
4.5 Controls and indicators X X
4.6 Conveyors X
4.7 Access systems to operator's station and to maintenance points X X X
4.8 Protection X X X
4.9 Signal devices and warning signs X X X
4.10 Electromagnetic compatibility (EMC) X X
4.11 Noise X X
4.12 Vibration X
4.13 Paver-finishers with emission reducing device (ERD) X X
4.14 Paver-finishers equipped with a binder spraying system
4.14.1 Binder heating system X X
4.14.2 Pipes and hoses for hand lances X
4.14.3 Binder filler openings X
4.14.4 Binder tank breathing X
6 Information for use – Operator´s manual X X
Annex A Noise test code for paver-finishers X X
Annex B Emission reducing device (ERD) – Performance requirements and test procedures X
Annex C Examples of paver-finishers
6 Information for use — Operator´s manual
ISO 20500-1:—, 6.2 applies with the following additions:
— information for a safe cleaning of the hopper and auger;
— information for a safe handling of gas bottles (including transportation);
— warning message that it is forbidden to transport dangerous goods (for example gas bottles) in the hopper;
— instruction how to install bolt-on screed extensions with their respective bracing and spreading augers;
— instructions covering installations of screeds, approved by the manufacturer;
— information about travelling/transportation configuration and locking concerning moveable
attachments, for example screeds, hopper wings;
— information for screeds approved by the manufacturer;
— instruction that it is not permitted to use the hopper for transportation;
— if ERD installed, information on corrective measures to be taken, if the ERD indicating device shows
improper or undesired function-state of the ERD;
— information on how to periodically maintain the ERD, if installed;
— information about the speed and flow of the ERD, including differential pressure, if installed;
— information about safe use of spray bars and lances, if equipped;
— operators shall be informed that if they stay a long time on the screed walkway, they may be exposed to
harmful vibration;
— information about the hopper inserts approved by the manufacturer;
— information about special safety precautions regarding the use of a hopper insert.
Annex A
(normative)
Noise test code for paver-finishers
A.1 General
This noise test code specifies all the information necessary to carry out efficiently and under standardized
conditions the determination, declaration and verification of the noise emission characteristics of paver-
finishers.
Noise emission characteristics include emission sound pressure levels at operator´s station and the sound
power level. The determination of those quantities is necessary for:
— manufacturers to declare the noise emitted;
— comparing the noise emitted by machines in the family concerned;
— purposes of noise control at the source at the design stage;
— users to carry out their risk assessment with the help of sound pressure levels at operator's station.
The use of this noise test code ensures reproducibility of the determination of the noise emission
characteristics within specified limits determined by the grade of accuracy of the basic noise-measurement
method used. Noise-measurement methods allowed by this document are engineering methods (grade 2).
The operator's position is specified by the manufacturer.
A.2 Determination of A-weighted sound power level
A.2.1 General
This annex specifies additional requirements for the determination of A-weighted sound power level
according to ISO 3744:2010.
A.2.2 Measurement surface
A hemispherical test area shall be used for measurement.
A.2.3 Size of the measurement surface
The radius shall be calculated from the basic length L of the machine (see Figures A.1 and A.2). The basic
length includes the main body of the machine plus working units, such as screed. The width of the machine
shall be the basic width of the paver-finisher.
a) basic length of crawler-mounted paver-finisher b) basic length of rubber-tyred paver-finisher
Figure A.1 — Basic length of the machine
The radius shall be:
— 4 m when the basic length L of the machine to be tested is less than or equal to 1,5 m;
— 10 m when the basic length L of the machine to be tested is greater than 1,5 m but less than or equal to 4 m;
— 16 m when the basic length L of the machine to be tested is greater than 4 m.
A.2.4 Microphone positions on the hemispherical measurement surface
Six microphone positions (i.e. positions 2, 4, 6, 8, 10 and 12) shall be arranged according to Figure A.2.
Microphone
x/r y/r z
position
2 0,7 0,7 1,5 m
4 −0,7 0,7 1,5 m
6 −0,7 −0,7 1,5 m
8 0,7 −0,7 1,5 m
10 −0,27 0,65 0,71r
12 0,27 −0,65 0,71r
Key
x distance between the microphone position and the Y-axis
y distance between the microphone position and the X-axis
z distance between the microphone position and the ground level
Figure A.2 — Microphone positions
A.2.5 Positioning of the machine
The centre of the machine shall coincide with the centre of the hemisphere, which is the intersecting point of
the X-axis and Y-axis (see Figure A.2). The front (direction of travelling) of the machine shall point towards
the microphone positions 2 and 8. For positioning the machine, the middle of the basic length L shall be
regarded as the central point.
A.2.6 Repetition of the test
The A-weighted sound power level shall be determined at least three times. If at least two of the
determined values do not differ by more than 1 dB, further measurements are not necessary. Otherwise the
measurements shall be continued until 2 values differing by no more than 1 dB are obtained. The A-weighted
sound power level to be used for calculating the sound power level to be declared is the arithmetic mean of
both highest values that do not differ by more than 1 dB.
The total duration of each measurement at each microphone position shall be at least 15 s.
A.3 Determination of A-weighted emission sound pressure level at the operator's
position
A.3.1 General
This annex specifies additional requirements for the determination o
...
ISO/TC 195
Secretariat: SAC
Date: 2024-10-302025-01-16
Mobile road construction machinery — Safety —
Part 5:
Specific requirements for paver-finishers
Machines mobiles pour la construction de routes — Sécurité —
Partie 5: Prescriptions spécifiques pour finisseurs
FDIS stage
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication
may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,
or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO
at the address below or ISO’s member body in the country of the requester.
ISO copyright office
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CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
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Published in Switzerland
ii
Contents
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Safety requirements and/or protective/risk reduction measures . 4
4.1 General . 4
4.2 Visibility . 5
4.3 Operator's station . 11
4.4 Operator's seat . 12
4.5 Controls and indicators . 12
4.6 Conveyors . 12
4.7 Access systems to operator's station and to maintenance points . 12
4.8 Protection . 12
4.9 Signal devices and warning signs . 13
4.10 Electro-magnetic compatibility (EMC) . 13
4.11 Noise . 13
4.12 Vibration . 13
4.13 Paver-finishers with emission reducing device (ERD) . 13
4.14 Paver-finishers equipped with a binder spraying system . 14
5 Verification of the safety requirements and/or protective/risk reduction measures . 14
6 Information for use — Operator´s manual . 16
Annex A (normative) Noise test code for paver-finishers . 18
Annex B (normative) Emission reducing device (ERD) – Performance requirements and test
procedures . 25
Annex C (informative) Examples of paver-finishers . 51
Annex D (informative) List of significant hazards . 61
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered . 64
Bibliography . 69
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of
ISO documentsdocument should be noted. This document was drafted in accordance with the editorial rules
of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawnISO draws attention to the possibility that some of the elementsimplementation of this
document may beinvolve the subjectuse of (a) patent(s). ISO takes no position concerning the evidence,
validity or applicability of any claimed patent rights in respect thereof. As of the date of publication of this
document, ISO had not received notice of (a) patent(s) which may be required to implement this document.
However, implementers are cautioned that this may not represent the latest information, which may be
obtained from the patent database available at www.iso.org/patents. ISO shall not be held responsible for
identifying any or all such patent rights. Details of any patent rights identified during the development of the
document will be in the Introduction and/or on the ISO list of patent declarations received (see ).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 195, Building construction machinery and
equipment, in collaboration with the European Committee for Standardization (CEN) Technical Committee
CEN/TC 151, Construction equipment and building material machines - Safety, in accordance with the
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
A list of all parts in the ISO 20500 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
Introduction
This document is a type C standard as stated in ISO 12100.
This document is of relevance, in particular, for the following stakeholder groups representing the market
players with regard to machinery safety:
— machine manufacturers (small, medium and large enterprises);
— health and safety bodies (regulators, accident prevention organisations, market surveillance, etc.).
Others can be affected by the level of machinery safety achieved with the means of the document by the above-
mentioned stakeholder groups:
— machine users/employers (small, medium and large enterprises);
— machine users/employees (e.g. trade unions, organisations for people with special needs);
— service providers, e.g. for maintenance (small, medium and large enterprises);
— consumers (in case of machinery intended for use by consumers).
The above-mentioned stakeholder groups have been given the possibility to participate at the drafting process
of this document.
The machinery concerned and the extent to which hazards, hazardous situations or hazardous events are
covered are indicated in the Scope of this document.
When requirements of this type-C standard are different from those which are stated in type-A or type-B
standards, the requirements of this type-C standard take precedence over the requirements of the other
standards for machines that have been designed and built according to the requirements of this type-C
standard.
v
Mobile road construction machinery — Safety —
Part 5:
Specific requirements for paver-finishers
1 Scope
This document, together with ISO 20500-1:—, deals with all significant hazards, hazardous situations and
events relevant to paver-finishers when used as intended and under the conditions of misuse which are
reasonably foreseeable by the manufacturer (see Annex D) associated with the whole lifetime of the machine
as described in ISO 12100:2010, 5.4.
The requirements of this document are complementary to the common requirements formulated in
ISO 20500-1:—. This document does not repeat the requirements of ISO 20500-1:— but supplements or
modifies the requirements for paver-finishers.
Lightning as a significant and relevant hazard is not covered in this document.
This document is not applicable to paver-finishers manufactured before the date of its publication.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 2867:2011, Earth-moving machinery — Access systems
ISO 3744:2010, Acoustics — Determination of sound power levels and sound energy levels of noise sources using
sound pressure — Engineering methods for an essentially free field over a reflecting plane
ISO 11201:2010, Acoustics — Noise emitted by machinery and equipment — Determination of emission sound
pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane
with negligible environmental corrections
ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction
ISO 13857:2019., Safety of machinery — Safety distances to prevent hazard zones being reached by upper and
lower limbs
ISO 15878:2021, Road construction and maintenance equipment — Paver-finishers — Commercial
specifications
ISO 20500-1:—, Mobile road construction machinery — Safety — Part 1: Common requirements
ISO 29042-4:2009, Safety of machinery — Evaluation of the emission of airborne hazardous substances — Part
4: Tracer method for the measurement of the capture efficiency of an exhaust system
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 12100:2010, ISO 15878:2021,
ISO 20500-1:— and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1 3.1
paver-finisher
mobile self-propelled machine consisting of a tractor and a free-floating screed intended for the placement
and pre-compaction of the paving material using the floating/self-levelling screed method
Note 1 to entry: See Figures C.1 to C.8 for examples.
3.2 3.2
emission reducing device
ERD
system to extract or reduce emissions from bitumen or other volatile or suspended substances away from
screed area and from paver-operator’s stations by using suction vacuum pressure
3.2.1 3.2.1
ERD indicating device
means to visually provide to the operator the information, whether the ERD (3.2) is operating within the
designed operating-range
3.2.2 3.2.2
tracer gas test method
use of substances with an aerodynamic behaviour comparable to the pollutant under consideration and which
can be reliably measured
3.2.3 3.2.3
ERD design volume flow
Q
design
mean volume flow of air discharged by the ERD (3.2) and as specified by the manufacturer during design-
phase
3.2.4 3.2.4
effective ERD volume flow
Q
effective
mean volume flow of air discharged by the ERD (3.2) as measured under specific test conditions
Note 1 to entry: The test conditions are specified in Annex B.
3.2.5 3.2.5
effective tracer gas volume flow
Q
SF_6
mean volume flow of SF injected into the ERD (3.2) either via direct injection, or via the injection lance under
specific test conditions
Note 1 to entry: The test conditions are specified in Annex B.
3.2.6 3.2.6
measured capture efficiency of an ERD
η
c
ratio of the mean concentration of tracer gas (3.2.11) measured in the ERD (3.2) discharge during the capture
efficiency test to the mean concentration of tracer gas measured in the ERD discharge during the 100 %
capture test
3.2.7 3.2.7
effective capture efficiency of an ERD
η
c,effective, EUT
average of several samples of the ratio of the mass-flow rate of a specified pollutant directly collected by the
ERD (3.2) to the uncontrolled mass-flow rate of this pollutant emitted from the machine with a Student-T-
correction for a confidence level of 95 % applied
Note 1 to entry: This value is the significant parameter of an ERD.
3.2.8 3.2.8
ambient gas concentration
C
C ’
concentration measured at the point of sampling when no tracer gas (3.2.11) is actually released
Note 1 to entry: These concentrations represent the background concentration and are used to correct the measured
concentration values C (3.2.9) and C (3.2.10) when determining the measured capture efficiency of an ERD,η (3.2.6). C
2 3 c 1
designates the pre-test ambient gas concentration whereas C ’ represents the post-test ambient gas concentration once
the purge cycle is complete.
Note 2 to entry: Each test requires determination of the ambient gas concentrations C1 and C1’. These values can be
higher than earlier ambient gas concentration measurements if precedent measurements have been carried out in
advance or if residual concentration of tracer gas is present.
Note 3 to entry: The purge cycle, if necessary, is made by chasing all tracer substances from the tracer injection circuit
using compressed air for several seconds (as the volume of the circuit is only a few cubic centimetres).
3.2.9 3.2.9
scaled tracer gas concentration
C
) is directly released into the ERD
concentration measured at the point of sampling when the tracer gas (3.2.11
(3.2) and diluted by the system volume-flow
Note 1 to entry: This concentration is used as 100 %-reference-value for determining the measured capture efficiency of
an ERD, η (3.2.6(3.2.6).).
c
3.2.10 3.2.10
ERD-characteristic tracer-gas concentration
C
concentration measured at the point of sampling when the tracer gas (3.2.11) is released at a characteristic
point (e.g. under the distribution auger) and diluted by the system volume-flow
Note 1 to entry: For an example of a characteristic point, see Annex B.
Note 2 to entry: This concentration is used as a calculation-value for determining the measured capture efficiency of an
ERD,η (3.2.6).
c
3.2.11 3.2.11
tracer gas
gas used for the purpose of the tests, that is non-toxic, chemically inert, low background concentration or
environmental interferences, and is easily measured at low concentrations
Note 1 to entry: Historically SF has been a commonly used tracer gas.
Note 2 to entry: Other tracer gases can be used if future research identifies an appropriate substitute.
Note 3 to entry: Tracer gas is described in Annex B.
3.2.12 3.2.12
equipment under test
EUT
representative paver-finisher (3.1) equipped with an ERD (3.2) establishing a test-set-up to carry out a valid
test
Note 1 to entry: The valid test is described in Annex B.
3.3 3.3
hot mix asphalt
HMA
asphalt mix produced at temperatures between 140 °C and 190 °C
Note 1 to entry: Per Reference [1], hot mixes are produced at a temperature between 150 °C and 190 °C.
Note 2 to entry: Per Reference [2], conventional hot-mix asphalt (HMA) is typically produced at temperatures from
280 °F to 320 °F (140 °C to 160 °C).
3.4 3.4
binder spraying system
rigidly fixed attachment intended to spray automatically emulsion of binder (bitumen/emulsion) on the road
surface at a predetermined rate to formulate a film of bituminous binder before applying road building
material
Note 1 to entry: The system may consist of binder storage, pumps and spray bars which are fitted to the paver-finisher
(3.1). The system may be equipped with a heating system.
3.5 3.5
side boundary
SB
line on the ground reference plane located at 2 m distance from the left- and right-hand side of the outmost
edge of the basic machine
3.6 3.6
front boundary
FB
line on the ground reference plane located at 1 m distance from the front edge of hopper insert
4 Safety requirements and/or protective/risk reduction measures
4.1 General
4.1.1 Context
Paver-finishers shall conform to the safety requirements and/or protective/risk reduction measures of this
clause. In addition, the machines shall be designed according to the principles of ISO 12100:2010 for relevant
but not significant hazards which are not dealt with by this document.
4.1.2 Specific relation to ISO 20500-1
Paver-finishers shall conform to the requirements of ISO 20500-1:—, as far as not modified or replaced by the
requirements of this document.
4.2 Visibility
4.2.1 General
ISO 20500-1:—, 4.2 applies with the additions specified in 4.2.24.2.2 to 4.2.44.2.4.
4.2.2 Visibility performance criteria
The measurement results, when tested using the setup details as shown in Figures 1 to 4, shall show no
maskings or maskings smaller than or equal to the performance criteria with direct or indirect view as
specified in Table 1.
Paver-finisher shall be set up with hoppers folded up and screed walkways folded up (see Figures 3 and 4).
Table 1 applies in addition to ISO 20500-1:—, Table 3.
Table 1 — Visibility performance criteria
A B C D E F RB/SB
Basic width of tractor ≤ 1,4 m
Eye spacing 205 mm 205 mm 205 mm 205 mm 205 mm 205 mm 405 mm
Number and 1 time 0 0 1 time 1 time 1 time 300 mm
width of
700 mm 300 mm 700 mm 700 mm
masking
Basic width of tractor > 1,4 m
Eye spacing 205 mm 205 mm 205 mm 205 mm 205 mm 205 mm 405 mm
Number and 1 time 2 times 2 times 2 times 2 times 2 times 300 mm
width of
700 mm 300 mm 300 mm 700 mm 700 mm 700 mm
masking
or or or or or
1 time 1 time 1 time 1 time 1 time
700 mm 700 mm 1 300 mm 1 300 mm 1 300 mm
This table applies in addition to Table 3 of Part 1
4.2.54.2.3 Visibility performance criteria for the rectangular boundary RB and side boundary SB
The measurement results shall show no maskings or maskings smaller or equal to the acceptable maskings
(300 mm) when evaluated using the eye spacing specified in Table 2 for the RB and where applicable in
addition for the SB and using the test object height Z for the SB and Y for each region RB as specified in Table 2.
Table 2 — Vertical test object height by machine width, region of the RB and SB
Basic width of Side boundary SB Region of the RB
tractor
Front side Left-hand side Right-hand Rear side
side
≤ 1,4 m No side boundary Y = 1,5 m Y = 1,5 m Y = 1,5 m Y = 1,5 m
required
X = 1,5 m
See Figure 2
> 1,4 m Z = 1,2 m Y = 1,5 m Y = 1,5 m Y = 1,5 m Y = 1,5 m
with SB = 2,0 m X = 1,0 m
See Figure 4 See Figure 3
Key
1 rectangular boundary
2 side boundary
A, B, C, D, E, F sectors of vision
Y Y-axis and forward direction of machine
Figure 1 — Setup of machines
Dimensions in metres
Key
X distance between machine and RB to the front
Y vertical test object height on the RB
1 filament position centre point (FPCP)
Figure 2 — Side view of a paver-finisher basic width < 1,4 m
Dimensions in metres
Key
X distance between machine and RB to the front
Y vertical test object height on the RB
H screed height (to be recorded)
1 filament position centre point (FPCP)
Figure 3 — Side view of a paver-finisher basic width > 1,4 m
Dimensions in metres
Key
Y vertical test object height on the RB
Z vertical test object height on the SB
Figure 4 — Front view of a paver-finisher
4.2.64.2.4 Additional visibility performance criteria for the rectangular boundary RB and front
boundary FB in combination with a hopper insert
The setup of the machine in combination with the hopper insert is shown in Figures 5 and 6, with a vertical
test object height Y = 1,5 m at the FB = 1 000 mm to the front and RB = 1 000 mm to the sides of the hopper
insert.
In combination with a hopper insert when tested using the setup details as shown in Figures 5figure 5 and 66,
the measurement results shall show no maskings or maskings smaller or equal to the acceptable maskings
(300 mm) in RB and FB of the hopper insert area as shown in Figure 5figure 5.
NOTE 1 Measurements in operation mode are specified by the manufacturer (e.g. seat slewed out).
NOTE 2 The 12 m circle (sector A, parts of sectors B and C) is not relevant for this application since the paver-finisher
works directly behind a mobile feeder).
Key
1 paver-finisher
2 hopper insert
3 front boundary
4 rectangular boundary
5 filament position centre point (FPCP) (operator in slewed-out seating position)
Figure 5 — Top view of a paver-finisher in combination with a hopper insert
Dimensions in metres
Key
Y vertical test object height on the FB
1 filament position centre point (FPCP)
2 hopper insert
3 conveyor of a mobile feeder
Figure 6 — Side view of a paver-finisher in combination with a hopper insert
4.3 Operator's station
ISO 20500-1:—, 4.4 applies with the following exception:
— ISO 20500-1:—, 4.4.2, first paragraph, does not apply for paver-finishers;
— ISO 20500-1:—, 4.4.3, first paragraph does not apply for paver-finishers with an operating mass below
7 250 kg.
NOTE National regulations or regional requirements can apply making a sun-protection mandatory irrespective of
the weight of the paver.
4.4 Operator's seat
ISO 20500-1:—, 4.5.2 applies with the following addition:
According to ISO 7096, the vibration level at the driver seat is so low that this seat does not require a
suspension for the attenuation of transmitted vibration (see ISO 7096:2020, 1.4).
4.5 Controls and indicators
ISO 20500-1:—, 4.6 applies with the following addition:
— the extending or closing of the telescopic screed shall not be simultaneously activated from both the
operator's station and the remote control, if relevant;
— controls for the width adjustment of extendable screeds shall be designed in such a manner as to ensure
that they return to neutral when released (hold-to-run control); see also ISO 20500-1:—, 4.6.2.1.
4.6 Conveyors
ISO 20500-1:—, 4.8 applies with the following exemption:
Rigidly installed material conveyors inside the hopper do not need to conform to ISO 20500-1:—, 4.8.
4.7 Access systems to operator's station and to maintenance points
ISO 20500-1:—, 4.9 applies with the following exception and addition:
— the height of the first step (600 mm) for access to the operator's position may be exceeded in transport
position of the machine;
— ISO 20500-1:—, 4.9 does not apply for access systems leading to service points in the area of the hopper;
— walkways shall be fitted to cover the operating width of the screed. These walkways may be fitted directly
to the screed sections or by other means. These means may include a manually deployed walkway fixed to
the screed;
— the screed is considered as an alternative exit according to ISO 2867:2011, 4.3.
4.8 Protection
ISO 20500-1:—, 4.10 applies with the following addition:
— spreading augers shall be guarded in accordance with ISO 20500-1:—, 4.10 to prevent unintended access
to the auger along the width of the base machine, except at edges of the chassis where spreading augers
extend beyond the width of the base machine; in this case means shall be provided along the screeds to
minimize the risk;
— where the spreading augers extend beyond the width of the base machine, means (e.g. guard rails, distance
guards) shall be provided on the screeds to minimize the risk of inadvertent access;
NOTE The width of the base machine is identical to the tractor width.
— protective means (e.g. tying down or positive engagement) shall be taken to prevent hopper insert from
falling out of the hopper.
4.9 Signal devices and warning signs
ISO 20500-1:—, 4.15 applies with the following addition:
Extendable screeds fitted on paver-finishers which could form crushing or shearing zones during their
operation shall be fitted with yellow flashing lights. Those flashing lights shall be located close to the crushing
or shearing zones and shall be activated automatically when the screeds are extended or retracted.
NOTE: Crushing or shearing zones duringcan occur while extending the screed can occur when operating the
machine next to external obstacles (e.g. wall).
4.10 Electro-magnetic compatibility (EMC)
ISO 20500-1:—, 4.18 applies with the following addition:
The antenna shall be located successively on the left- and right-hand sides of the paver-finisher, with the
antenna parallel to the plane of the longitudinal symmetry of the paver-finisher and in line with the seat index
point (SIP.)
4.11 Noise
ISO 20500-1:—, 4.19.1 applies with the following addition:
For the determination of the noise emission values, Annex A shall apply to paver-finishers.
For paver-finisherfinishers, the main sources of noise are the engine, the hydraulic components, the cooling
system, and the working process (e.g. compaction by screed, conveying).
4.12 Vibration
ISO 20500-1:—, 4.20.1 applies with the following addition:
— for paver-finishers with an operating mass exceeding 7 250 kg, whole body and hand-harm emission
2 2
vibration at the driver workplace are generally below respectively 0,5 m/s and 2,5 m/s ;
NOTE When traversing from one side to the other side of the screed using the screed walkway, operators can be
exposed to high level of vibration due to the compaction system, when trespassing.
— for paver-finishers with an operating mass below 7 250 kg, technical solution shall be provided to isolate
the driver from vibration due to the compaction system (see also CEN/TR 15172-1:2005).
4.13 Paver-finishers with emission reducing device (ERD)
Paver The paver-finisher, exceeding an operating mass of 7250 7 250 kg shall be equipped with an ERD
system.
This system shall meet the requirements of Annex B. A visual device shall be fitted to indicate whether the
ERD is not operating within the designed operating-range (e.g. a simple differential pressure indication is
sufficient).
NOTE For applications using mixtures of asphalt-compounds it is recommended to install an emission reducing
device (ERD) when using hot mix asphalt (HMA).
4.14 Paver-finishers equipped with a binder spraying system
4.14.1 Binder heating system
Heating systems shall be equipped with an automatic device to control the temperature of the road building
material.
The following shall be provided both for direct and for indirect heating:
— temperature gauge for the road building material;
— heat transfer fluid (oil) temperature gauge shall be provided for indirect heating;
— temperature control for the road building material up to a maximum permissible temperature;
— devices which automatically shut down fuel supply on loss of flame.
For heating systems using liquid gas, Annex C of ISO 20500-1:XX:—, Annex C applies.
4.14.2 Pipes and hoses for hand lances
For pipes with an operating pressure of more than 5 MPa (50 bar) and/or a temperature of over 50 °C used
for hand-lances, a protection (e.g. metallic helix) of at least 1 m is necessary. The protection shall be fitted on
the end (hand-lance) of the pipe.
4.14.3 Binder filler openings
Filler openings having a diameter exceeding 240 mm shall be provided with guard bars which shall be
demountable for maintenance by the use of tools. The permitted maximum spacing of the bars isshall be
180 mm according toin accordance with ISO 13857:2019, 4.3.
4.14.4 Binder tank breathing
Non-pressure type bitumen tanks shall be provided with at least one permanently open breather vent. The
minimum internal diameter shall be:
— 25 mm for tanks with a capacity less than 300 l;
— 50 mm for tanks with a capacity equal or above 300 l.
The breather shall be easy to check and located into the hopper such that spillage of bitumen into environment
is minimized in the event of unintended overfilling.
5 Verification of the safety requirements and/or protective/risk reduction
measures
Safety requirements and/or protective/risk reduction measures of Clauses 4 and 6 shall be verified according
to Table 3.
Table 3 sets out verification methods which shall be applied for each safety requirement in this document.
Where X(s) is indicated in the Table, the corresponding verification method(s) shall be applied.
Table 3 shall be read in conjunction with the corresponding clauses/subclauses.
Table 3Table 3 applies in addition to Table 3 of Part ISO 20500-1:—, Table 3.
Table 3 includes the following verification methods:
a) calculation: to establish that the requirements of this document have been met;
b) visual verification: to establish that something is present (e.g. a guard, a marking, a document);
c) measurement: to show that the required numerical values have been met (e.g. geometric dimensions,
safety distances, resistance of insulation of the electric circuits, results of physical tests);
d) functional tests: to show that the adequate signals intended to be forwarded to the main control system
of the complete machine are available and conform to the requirements and the technical documentation;
e) special verification: by reference to a standard which is mentioned in the corresponding clause/subclause.
Table 3 — Verification of safety requirements and/or protective/risk reduction measures
Clause/su Title a) b) c) d) e)
bclause Cal Vis Me Fu Spe
number cul ual asu nct cial
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4 Safety requirements and/or protective/risk reduction measures
4.1 General
4.1.1 Context X
4.1.2 Specific relation to ISO 20500-1 X
4.2 Visibility X X
4.2.1 General X
4.2.2 Visibility performance criteria X
4.2.3 Visibility performance criteria for the rectangular boundary RB and X
side boundary SB
4.2.4 Additional visibility performance criteria for the rectangular X
boundary RB and front boundary FB in combination with a hopper
insert
4.3 Operator's station X
4.4 Operator's seat X
4.5 Controls and indicators X X
4.6 Conveyors X
4.7 Access systems to operator's station and to maintenance points X X X
4.8 Protection X X X
4.9 Signal devices and warning signs X X X
4.10 Electromagnetic compatibility (EMC) X X
4.11 Noise X X
4.12 Vibration X
4.13 Paver-finishers with emission reducing device (ERD) X X
4.14 Paver-finishers equipped with a binder spraying system
Clause/su Title a) b) c) d) e)
bclause Cal Vis Me Fu Spe
number cul ual asu nct cial
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ati nt tes ati
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4.14.1 Binder heating system X X
4.14.2 Pipes and hoses for hand lances X
4.14.3 Binder filler openings X
4.14.4 Binder tank breathing X
6 Information for use – Operator´s manual X X
Annex A Noise test code for paver-finishers X X
Annex B Emission reducing device (ERD) – Performance requirements and X
test procedures
Annex C Examples of paver-finishers
6 Information for use — Operator´s manual
ISO 20500-1:—, 6.2 applies with the following additions:
— information for a safe cleaning of the hopper and auger;
— information for a safe handling of gas bottles (including transportation);
— warning message that it is forbidden to transport dangerous goods (for example gas bottles) in the hopper;
— instruction how to install bolt-on screed extensions with their respective bracing and spreading augers;
— instructions covering installations of screeds, approved by the manufacturer;
— information about travelling/transportation configuration and locking concerning moveable attachments,
for example screeds, hopper wings;
— information for screeds approved by the manufacturer;
— instruction that it is not permitted to use the hopper for transportation;
— if ERD installed, information on corrective measures to be taken, if the ERD indicating device shows
improper or undesired function-state of the ERD;
— information on how to periodically maintain the ERD, if installed;
— information about the speed and flow of the ERD, including differential pressure, if installed;
— information about safe use of spray bars and lances, if equipped;
— operators shall be informed that if they stay a long time on the screed walkway, they may be exposed to
harmful vibration;
— information about the hopper inserts approved by the manufacturer;
— information about special safety precautions regarding the use of a hopper insert;.
— information about the speed and flow of the ERD, including differential pressure, if installed.
Annex BAnnex A
(normative)
Noise test code for paver-finishers
B.1A.1 General
This noise test code specifies all the information necessary to carry out efficiently and under standardized
conditions the determination, declaration and verification of the noise emission characteristics of paver-
finishers.
Noise emission characteristics include emission sound pressure levels at operator´s station and the sound
power level. The determination of those quantities is necessary for:
— manufacturers to declare the noise emitted;
— comparing the noise emitted by machines in the family concerned;
— purposes of noise control at the source at the design stage;
— users to carry out their risk assessment with the help of sound pressure levels at operator's station.
The use of this noise test code ensures reproducibility of the determination of the noise emission
characteristics within specified limits determined by the grade of accuracy of the basic noise-measurement
method used. Noise-measurement methods allowed by this document are engineering methods (grade 2).
The operator's position asis specified by the manufacturer.
B.2A.2 Determination of A-weighted sound power level
B.2.1A.2.1 General
This annex specifies additional requirements for the determination of A-weighted sound power level
according to ISO 3744:2010.
B.2.2A.2.2 Measurement surface
A hemispherical test area shall be used for measurement.
B.2.3A.2.3 Size of the measurement surface
The radius shall be calculated from the basic length L of the machine (see Figures A.1 and A.2). The basic length
includes the main body of the machine plus working units, such as screed. The width of the machine shall be
the basic width of the paver-finisher.
a) basic length of crawler-mounted paver-finisher b) basic length of rubber-tyred paver-finisher
Figure A.1 — Basic length of the machine
The radius shall be:
— 4 m when the basic length L of the machine to be tested is less than or equal to 1,5 m;
— 10 m when the basic length L of the machine to be tested is greater than 1,5 m but less than or equal to
4 m;
— 16 m when the basic length L of the machine to be tested is greater than 4 m.
B.2.4A.2.4 Microphone positions on the hemispherical measurement surface
Six microphone positions (i.e. positions 2, 4, 6, 8, 10 and 12) shall be arranged according to Figure A.2.
Microphone
x/r y/r z
position
2 0,7 0,7 1,5 m
4 −0,7 0,7 1,5 m
6 −0,7 −0,7 1,5 m
8 0,7 −0,7 1,5 m
10 −0,27 0,65 0,71r
12 0,27 −0,65 0,71r
Key
x distance between the microphone position and the Y-axis
y distance between the microphone position and the X-axis
z distance between the microphone position and the ground level
Figure A.2 — Microphone positions
B.2.5A.2.5 Positioning of the machine
The centre of the machine shall coincide with the centre of the hemisphere, which is the intersecting point of
the X-axis and Y-axis (see Figure A.2). The front (direction of travelling) of the machine shall point towards
the microphone positions 2 and 8. For positioning the machine, the middle of the basic length L shall be
regarded as the central point.
B.2.6A.2.6 Repetition of the test
The A-weighted sound power level shall be determined at least three times. If at least two of the determined
values do not differ by more than 1 dB, further measurements are not necessary. Otherwise the measurements
shall be continued until 2 values differing by no more than 1 dB are obtained. The A-weighted sound power
level to be used for calculating the sound power level to be declared is the arithmetic mean of both highest
values that do not differ by more than 1 dB.
The total duration of each measurement at each microphone position shall be at least 15 s.
B.3A.3 Determination of A-weighted emission sound pressure level at the
operator's position
B.3.1A.3.1 General
This annex specifies additional requirements for the determination of the A-weighted sound pressure level at
the operator's station of paver-finishers according to ISO 11201:2010 with grade 2 of accuracy for a seating
and/or standing operator. The operator´s position asis specified by the manufacturer. The operator shall be
present during the test.
B.3.2A.3.2 Enclosed operator's positions
When equipped with a cabin, all doors and windows shall be closed during measurement. The operator station
air circulation fan speed shall be set to mid-position.
B.3.3A.3.3 Quantities to be determined
For machines designed for multiple operator positions on the operator station (e.g. left, right), the emission
sound pressure level at the operator's station is the highest emission value determined at the operator's
stations.
B.3.4A.3.4 Repetition of the test
The sound pressure level shall be measured at least three times at each microphone position. If at least two of
the measured values do not differ by more than 1 dB, further measurements are not necessary. Otherwise the
measurements shall be continued until 2 values differing by no more than 1 dB are obtained. The A-weighted
emission sound pressure level to be used is the arithmetic mean of the two highest values that do not differ by
more than 1 dB.
The duration of each measurement at each microphone position shall be at least 15 s.
B.3.5A.3.5 Microphone position(s)
For machines designed for multiple operator positions on the operator station (e.g. left, right), measurement
shall be carried out for all positions. The operator´s position asis specified by the manufacturer.
The measurement for a standing operator shall be carried out with the operator located within the area of the
standing surface as defined in ISO 20500-1:—, G.2.1.
B.4A.4 Operation conditions
B.4.1A.4.1 General
The machine shall be equipped as determined by the manufacturer, i.e. that all working units such as
conveying systems, spreading systems, compacting systems and screed shall be fitted.
B.4.2A.4.2 Fan speed
If the engine of the equipment or its hydraulic system is fitted with (a) fans(s) it (they) shall operate during
the test. The fan speed is, in accordance with one of the following conditions, stated and set by the
manufacturer of the equipment and shall appear in the test report, this speed being used in further
measurements.
a) Fan drive directly connected to the engine
If the fan drive is directly connected to the engine and/or hydraulic equipment (e.g. by belt drive) it must
operate during the test.
b) Fan drive with several distinct
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