Rough-terrain trucks — Visibility test methods and their verification — Part 1: Variable-reach trucks

ISO 18063-1:2016 applies to rough-terrain variable-reach trucks (hereinafter referred to as ?trucks') that have a specific seated operator's position on the left-hand side of the boom or centre position (excluding operator position on the right side of the boom). ISO 18063-1:2016 specifies a static test method for determining and evaluating the operator's visibility on a rectangular 1 m boundary around the rough-terrain variable-reach truck and on a 12 m radius visibility test circle. Performance requirements for visibility are specified in this document. ISO 18063-1:2016 does not apply to - trucks designed to handle freight containers (reach stackers), - articulated telescopic wheel loaders, - slewing trucks, or - lorry mounted trucks.

Chariots tout-terrain — Méthodes d'essai de la visibilité et leur vérification — Partie 1: Chariots à portée variable

General Information

Status
Published
Publication Date
25-Oct-2016
Current Stage
9020 - International Standard under periodical review
Start Date
15-Oct-2021
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INTERNATIONAL ISO
STANDARD 18063-1
First edition
2016-11-01
Corrected version
2017-02
Rough-terrain trucks — Visibility test
methods and their verification —
Part 1:
Variable-reach trucks
Chariots tout-terrain — Méthodes d’essai de la visibilité et leur
vérification —
Partie 1: Chariots à portée variable
Reference number
ISO 18063-1:2016(E)
ISO 2016
---------------------- Page: 1 ----------------------
ISO 18063-1:2016(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland

All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2016 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 18063-1:2016(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Test apparatus ......................................................................................................................................................................................................... 5

4.1 Light source apparatus .................................................................................................................................................................... 5

4.2 Vertical test object ................................................................................................................................................................................ 5

4.3 Observation mirror ............................................................................................................................................................................. 5

5 Truck test configuration ............................................................................................................................................................................... 5

5.1 Equipment of the truck .................................................................................................................................................................... 5

5.2 Openings ....................................................................................................................................................................................................... 6

5.3 Position of the truck and load handling attachment .............................................................................................. 6

6 Measurement procedure .............................................................................................................................................................................. 6

6.1 Test-surface marking and truck location on the test surface .......................................................................... 6

6.2 Positioning of the test apparatus ............................................................................................................................................ 7

6.3 Measurements of the maskings ................................................................................................................................................ 8

6.3.1 General...................................................................................................................................................................................... 8

6.3.2 Measurement at the visibility test circle ..................................................................................................... 8

6.3.3 Measurement at the rectangular 1 m boundary ................................................................................... 9

6.4 Requirements for derivative trucks ...................................................................................................................................10

7 Evaluation method and performance criteria ....................................................................................................................10

7.1 Visibility performance criteria on the visibility test circle ............................................................................10

7.2 Visibility performance criteria for the rectangular 1 m boundary .........................................................10

7.3 Visibility maskings that exceed the visibility performance criteria with direct view ............10

8 Calculation method and computer simulation ..................................................................................................................10

9 Test report ................................................................................................................................................................................................................10

9.1 Truck details ...........................................................................................................................................................................................10

9.2 Drawing ......................................................................................................................................................................................................11

10 Information for use .........................................................................................................................................................................................11

Annex A (informative) Light source spacing dimensions.............................................................................................................13

Annex B (informative) Performance criteria for additional devices ...............................................................................14

Annex C (informative) Procedure for the determination of maskings at the visibility test

circle or the rectangular 1 m boundary.....................................................................................................................................15

Annex D (informative) Examples of drawings for the test report .......................................................................................16

Bibliography .............................................................................................................................................................................................................................17

© ISO 2016 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 18063-1:2016(E)
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 documents 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 drawn to the possibility that some of the elements of this document may be the subject of

patent rights. 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 www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on 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 the following URL: www . i so .org/ iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 110, Industrial trucks, Subcommittee SC

4, Rough-terrain trucks.

This corrected version of ISO 18063-1:2016 incorporates the following corrections:

— the illustration of a load has been removed from Figure 3;

— the second and third title elements have been combined into a single element, Visibility test methods

and their verification;

— the listing of normative reference ISO 5053-1 has been transferred from the Bibliography to Clause 2.

— hyperlinked references to terminological databases have been added in Clause 3.

A list of all parts in the ISO 18063 series can be found on the ISO website.
iv © ISO 2016 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 18063-1:2016(E)
Introduction
This document is a type-C standard as stated in ISO 12100.

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 -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.
© ISO 2016 – All rights reserved v
---------------------- Page: 5 ----------------------
INTERNATIONAL STANDARD ISO 18063-1:2016(E)
Rough-terrain trucks — Visibility test methods and their
verification —
Part 1:
Variable-reach trucks
1 Scope

This document applies to rough-terrain variable-reach trucks (hereinafter referred to as ‘trucks’) that

have a specific seated operator’s position on the left-hand side of the boom or centre position (excluding

operator position on the right side of the boom).

This document specifies a static test method for determining and evaluating the operator’s visibility

on a rectangular 1 m boundary around the rough-terrain variable-reach truck and on a 12 m radius

visibility test circle. Performance requirements for visibility are specified in this document.

This document does not apply to
— trucks designed to handle freight containers (reach stackers),
— articulated telescopic wheel loaders,
— slewing trucks, or
— lorry mounted trucks.

NOTE The method used does not capture all of the aspects of the operator’s visibility, but provides

information to assist in determining the acceptability of visibility from the truck.

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 5053-1, Industrial trucks — Terminology and classification — Part 1: Types of industrial trucks

ISO 5353, Earth-moving machinery, and tractors and machinery for agriculture and forestry — Seat

index point

ISO 12100, Safety of machinery — General principles for design — Risk assessment and risk reduction

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 10896-1, ISO 5053-1 and

ISO 12100 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org/ obp
© ISO 2016 – All rights reserved 1
---------------------- Page: 6 ----------------------
ISO 18063-1:2016(E)
3.1
test surface

area of compacted earth or firm surface that forms the ground reference plane for the visibility

measurements, with a gradient of (0 ± 2) %
3.2
light source position centre point
LSPCP

mid-point of the line between light sources, at 65 mm, 205 mm or 405 mm light source spacing, located

680 mm above and 20 mm in front of the seat index point (SIP)
Note 1 to entry: The seat index point is defined in ISO 5353, 3.1.
Note 2 to entry: See Figure 1.
Dimensions in millimetres
Key
LB light bar
LS light source spacing (see Annex A)
SIP seat index point
S seat
LSPCP light source position centre point
Figure 1 — Light source apparatus
3.3
test truck boundary
TTB

smallest rectangular boundary that can be placed around the vertical projection of the truck

Note 1 to entry: Truck dimensions do not include equipment such as working lights, mirrors, etc.

Note 2 to entry: See Figure 4.
3.4 Visibility-test locations
3.4.1
visibility test circle
VTC

circle with 12 m radius located on the ground reference plane with its centre vertically below the light

source position centre point (3.2), which is divided into six sectors of vision
Note 1 to entry: For the six sectors of vision, see 3.4.3 to 3.4.6.
2 © ISO 2016 – All rights reserved
---------------------- Page: 7 ----------------------
ISO 18063-1:2016(E)
Note 2 to entry: See Figure 2.
3.4.2
rectangular 1 m boundary

line on the ground reference plane located at 1 m distance from the outside test truck boundary (3.3)

Note 1 to entry: See Figure 3 and Figure 4.
3.4.3
sector of vision A

segment of the visibility test circle (3.4.1) to the front of the truck, defined by a 9,5 m chord length for

the 12 m radius that is perpendicular to the longitudinal plane passing through the light source position

centre point (3.2) with the chord length bisected by the longitudinal plane
Note 1 to entry: See Figure 2.
3.4.4
sectors of vision B and C

segments of the visibility test circle (3.4.1) to the front of the truck outside sector of vision A (3.4.3) and

bounded by the transverse plane through the light source position centre point (3.2)

Note 1 to entry: See Figure 2.
3.4.5
sectors of vision D and E

segments of the visibility test circle (3.4.1) to the rear defined by an angle of 45° to both the right and left

sides of the longitudinal plane passing through the light source position centre point (3.2)

Note 1 to entry: See Figure 2.
3.4.6
sector of vision F

segment of the visibility test circle (3.4.1) to the rear between sectors of vision D and E (3.4.5)

Note 1 to entry: See Figure 2.
© ISO 2016 – All rights reserved 3
---------------------- Page: 8 ----------------------
ISO 18063-1:2016(E)
Key
VTC visibility test circle
LSPCP light source position centre point
RB rectangular 1 m boundary
TTB test truck boundary
X perpendicular to forward direction of the truck
Y forward direction of the truck
A, B, C, D, E, F sectors of vision
Figure 2 — Visibility test boundary
3.5
masking

shadow on the 12 m visibility test circle (3.4.1) or on the rectangular 1 m boundary (3.4.2) created

because parts of the base truck and/or its equipment block the light rays from the light sources

3.6
light source apparatus

test unit with at least two light sources that have adjustable light spacing, 360° rotatable, with its

rotation point at the light source position centre point (3.2) to simulate the range of eye positions for an

operator
Note 1 to entry: See Figure 1.
3.7
light source spacing
distance between the vertical centre axis of the considered light sources
3.8
light bar
rigid support on which the light sources are fixed and aligned
4 © ISO 2016 – All rights reserved
---------------------- Page: 9 ----------------------
ISO 18063-1:2016(E)
3.9
visibility performance criteria

criteria intended to minimize risk to persons in the vicinity of the truck during truck operation

Note 1 to entry: These visibility performance criteria are specified as maximum allowed maskings (3.5) at the

12 m visibility test circle (3.4.1) or at the rectangular 1 m boundary (3.4.2).
3.10 Direct and indirect visibility
3.10.1
direct visibility

visibility by direct line of sight as determined by the light from the light source

3.10.2
indirect visibility

visibility with the aid of mirrors or other visual aids, such as closed circuit TV (CCTV)

Note 1 to entry: For more information, see Annex B.
3.11
derivative truck

truck modified or fitted with equipment and/or attachments which can affect visibility

3.12
vertical test object

object used to evaluate the maskings (3.5) on the rectangular 1 m boundary (3.4.2), considered to be

two-dimensional, without depth
4 Test apparatus
4.1 Light source apparatus

The light source apparatus is capable of positioning a light bar horizontally with two light sources

(halogen light bulbs, laser, LEDs or equivalent). Each light source shall be horizontally movable on the

light bar from 32,5 mm up to 202,5 mm on each side of the light source position centre point. It shall

be possible to rotate the light bar through 360° around the light source position centre point. The light

source position centre point shall be located 680 mm above and 20 mm in front of the seat index point

(SIP) as described in ISO 5353. See Figure 1.
4.2 Vertical test object

The vertical test object shall be 1,5 m high, 100 mm wide and be maintained substantially perpendicular

to the tes
...

DRAFT INTERNATIONAL STANDARD
ISO/DIS 18063-1
ISO/TC 110/SC 4 Secretariat: AFNOR
Voting begins on: Voting terminates on:
2015-08-05 2015-11-05
Rough-terrain trucks — Visibility — Test methods and
their verification —
Part 1:
Variable-reach trucks
Chariots tout-terrain — Visibilité — Méthodes d’essai et leur vérification —
Partie 1: Chariots à portée variable
ICS:
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 18063-1:2015(E)
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 SUPPORTING DOCUMENTATION. ISO 2015
---------------------- Page: 1 ----------------------
ISO/DIS 18063-1:2015(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, Published in Switzerland

All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/WD 18063-1
Contents Page

1 Scope ...................................................................................................................................................... 1

2 Normative references ............................................................................................................................ 1

3 Terms and definitions ........................................................................................................................... 1

4 Test apparatus ....................................................................................................................................... 5

4.1 Light source apparatus ......................................................................................................................... 5

4.2 Vertical test object ................................................................................................................................. 5

4.3 Observation mirror ................................................................................................................................ 5

5 Truck test configuration ....................................................................................................................... 5

5.1 Equipment of the truck ......................................................................................................................... 5

5.2 Openings ................................................................................................................................................ 6

5.3 Position of the truck and load handling attachment ......................................................................... 6

6 Measurement procedure ....................................................................................................................... 6

6.1 Test-surface marking and truck location on the test surface ........................................................... 6

6.2 Positioning of the test apparatus ........................................................................................................ 7

6.3 Measurements of the maskings ........................................................................................................... 8

6.4 Requirements for derivative trucks ................................................................................................... 10

7 Evaluation method and performance criteria ................................................................................... 10

7.1 Visibility performance criteria on the visibility test circle ............................................................... 10

7.2 Visibility performance criteria for the rectangular 1 m boundary .................................................. 10

7.3 Visibility maskings that exceed the visibility performance criteria with direct view ................... 11

8 Calculation method and computer simulation ................................................................................. 11

9 Test report ............................................................................................................................................ 11

9.1 Truck details ........................................................................................................................................ 11

9.2 Drawing................................................................................................................................................. 11

10 Information for use .............................................................................................................................. 11

Annex A (informative) Light source spacing dimensions ........................................................................... 15

Annex B (informative) Performance criteria for additional devices ........................................................... 16

B.1 Performance criteria for mirrors ........................................................................................................ 16

B.2 Performance criteria for CCTV system ............................................................................................. 16

Annex C (informative) Procedure for the determination of maskings at the visibility test circle or

the rectangular 1 m boundary ............................................................................................................ 17

Annex D (informative) Examples of drawings for the test report ............................................................... 18

© ISO 2011 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/DIS 18063-1
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 documents 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 drawn to the possibility that some of the elements of this document may be the subject of patent

rights. 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 www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment,

as well as information about ISO’s adherence to the WTO principles in the Technical Barriers to Trade (TBT)

see the following URL: Foreword - Supplementary information

The committee responsible for this document is ISO/TC 110, Industrial trucks, Subcommittee SC 4, Rough-

terrain trucks

ISO 18063 consists of the following parts, under the general title Rough-terrain trucks -- Visibility -- Test

methods and their verification
-- Part 1: Variable-reach trucks
-- Part 2: Rotating trucks
iv © ISO 2011 – All rights reserved
---------------------- Page: 4 ----------------------
ISO/WD 18063-1
Introduction
This ISO standard is a "Type C" standard as defined in ISO 12100.

The machinery concerned and the extent to which hazards, hazardous situations and events are covered are

indicated in the scope of this standard.

Where there are provisions of this type-C standard which are different from those which are stated in type A or

B standards, the provisions of this type-C standard take precedence over the provisions of the other standards,

but only for trucks that have been designed and built in accordance with the provisions of this type-C standard.

© ISO 2011 – All rights reserved v
---------------------- Page: 5 ----------------------
ISO/WD 18063-1
Rough-terrain trucks — Visibility — Test methods and their
verification
1 Scope

This standard applies to rough-terrain variable-reach trucks (herein-after referred to as ‘trucks’) that have a

specific seated operator’s position, on the left hand side of the boom, or centre position (excluding operator

position on the right side of the boom).

For the purpose of this standard, where specified, truck dimensions do not include equipment such as working

lights, mirrors, etc.

This standard specifies a static test method for determining and evaluating the operator’s visibility on a

rectangular 1 m boundary close around the rough-terrain variable-reach truck and on a 12 m visibility test

circle. Performance requirements for visibility are specified in this standard.
This standard does not apply to
- trucks designed to handle freight containers (reach stackers)
- articulated telescopic wheel loaders
- slewing trucks
- lorry mounted trucks

Note: The method used does not capture all of the aspects of the operator’s visibility, but provides information

to assist in determining the acceptability of visibility from the truck.
2 Normative references

The following referenced documents are indispensable for the application 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 3411, Earth-moving machinery — Human physical dimensions of operators and minimum operator space

envelope

ISO 5353, Earth-moving machinery, and tractors and machinery for agriculture and forestry — Seat index

point

ISO 10896-1:2012, Rough-terrain trucks - Safety requirements and verification - Part 1: Variable-reach trucks

ISO 12100:2010, Safety of machinery — Basic concepts, general principles for design — General principles

for design – Risk assessment and risk reduction
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 10896-1, ISO 5053 and ISO 12100

and the following apply.
© ISO 2011 – All rights reserved 1
---------------------- Page: 6 ----------------------
ISO/DIS 18063-1
3.1
test surface

area of compacted earth or firm surface that forms the ground reference plane for the visibility measurements,

with a gradient of (0 ± 2) %
3.2
light source position centre point (LSPCP)

mid-point of the line between light sources, at 65 mm, 205 mm or 405 mm light spacing, located 680 mm

above and 20 mm in front of the seat index point (SIP) as defined in ISO 5353
NOTE 1 to entry see Figure 1
Dimensions in millimetres
Key
LB light bar
LS light source spacing (see Annex A)
SIP seat index point
S seat
LSPCP light source position centre point
Figure 1 — Light source apparatus
3.3
test truck boundary (TTB)

smallest rectangular boundary that can be placed around the vertical projection of the truck

NOTE 1 to entry see Figure 4
3.4 Visibility-test locations
3.4.1
visibility test circle (VTC)

circle with 12 m radius located on the ground reference plane with its centre vertically below the light source

position centre point. Circle is divided into six visibility sectors
NOTE 1 to entry see Figure 2
2 © ISO 2011 – All rights reserved
---------------------- Page: 7 ----------------------
ISO/WD 18063-1
3.4.2
rectangular 1 m boundary (RB)

line on the ground reference plane located at 1 m distance from the outside test truck boundary

NOTE 1 to entry see Figures 3 and 4
3.4.3
sector of vision A

segment of the visibility test surface to the front of the truck, defined by a 9,5 m chord length for the 12 m

radius that is perpendicular to the longitudinal plane passing through the light source position centre point with

the chord length bisected by the longitudinal plane
NOTE 1 to entry see Figure 2
3.4.4
sectors of vision B and C

segments of the visibility test surface to the front of the truck outside sector A and bounded by the transverse

plane through the light source position centre point
NOTE 1 to entry see Figure 2
3.4.5
sectors of vision D and E

segments of the visibility test surface to the rear defined by an angle of 45° to both the right and left sides of

the longitudinal plane passing through the light source position centre point
NOTE 1 to entry see Figure 2
3.4.6
sector of vision F
segment of the visibility test circle to the rear between sectors D and E
NOTE 1 to entry see Figure 2
© ISO 2011 – All rights reserved 3
---------------------- Page: 8 ----------------------
ISO/DIS 18063-1
Key
VTC visibility test circle
LSPCP light source position centre point
RB rectangular 1m boundary
TTB test truck boundary
X perpendicular to forward direction of the truck
Y forward direction of the truck
A, B, C, D, E, F sectors of vision
Figure 2 — Visibility test boundary
3.5
masking

shadow on the 12 m visibility test circle or on the rectangular 1 m boundary created because parts of the base

truck and/or its equipment block the light rays from the light sources
3.6
light source apparatus

test unit with at least two light sources, which are horizontally movable and 360° rotatable, with its rotation

point at the light source position centre point (LSPCP) intended to simulate the position of the operator eyes,

and the possible movements of their head
3.7
light source spacing
distance between the vertical centre axis of the considered light sources
3.8
light bar
rigid support on which the light sources are fixed and aligned
4 © ISO 2011 – All rights reserved
---------------------- Page: 9 ----------------------
ISO/WD 18063-1
3.9
visibility performance criteria

criteria for the design of trucks to enable an operator to see objects in the area around the truck during

operation and specified as maximum allowed maskings at the 12 m visibility test circle or at the rectangular 1

m boundary
3.10 Direct and indirect visibility
3.10.1
direct

visibility by direct line of sight as determined by the light from the light source

3.10.2
indirect

visibility with the aid of mirrors or other visual aids, such as closed circuit TV (CCTV)

NOTE 1 to entry for more information, see Annex B.
3.11
derivative truck

truck modified or fitted with equipment and/or attachments which can affect visibility

3.12
vertical test object

an object used to evaluate the maskings on the rectangular 1 m boundary and is considered as 2-dimensional,

without depth.
4 Test apparatus
4.1 Light source apparatus

The light source apparatus is capable of positioning a light bar horizontally with two light sources (halogen

light bulbs, laser, LEDs or equivalent). Each light source shall be horizontally movable on the light bar from

32,5 mm up to 202,5 mm on each side of the light source position centre point. It shall be possible to rotate

the light bar through 360° around the light source position centre point. The light source position centre point

shall be located 680 mm above and 20 mm in front of the seat index point (SIP) as described by ISO 5353

(see Figure 1).
4.2 Vertical test object

The vertical test object shall be 1,5 m high, 100 mm wide and be maintained substantially perpendicular to the

test surface throughout the tests.
4.3 Observation mirror

To determine the maskings on the visibility test circle or the rectangular 1 m boundary, a hand held mirror can

be used to detect the line-of-sight between the light source and the ground reference plane or vertical test

object. The observation mirror shall have a maximum size of 100 mm x 150 mm.
5 Truck test configuration
5.1 Equipment of the truck

The truck shall be equipped with standard fork arms and equipment according to the manufacturer’s standard

specification.
© ISO 2011 – All rights reserved 5
---------------------- Page: 10 ----------------------
ISO/DIS 18063-1
5.2 Openings
All truck openings, such as doors and windows, shall be closed.
5.3 Position of the truck and load handling attachment
The truck shall be positioned on the test surface according to Figure 2

The boom shall be fully retracted and its height adjusted so that dimension A (see Figure 3) is respected with

the upper face of the forks above and su
...

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