Fixed, vertical road traffic signs - Part 3: Delineator posts and retroreflectors

This Part 3 of EN 12899 specifies requirements for new delineator posts and for new retroreflectors as separate products or combined together to be used in traffic circulation areas.
It covers performance requirements and test methods.
Colorimetric and retroreflective properties are specified taking into account CIE recommendations.
Structural requirements include performance under static and dynamic loading.
Provision is made for safety in use, including vehicle impact.
To define durability this standard also includes performance levels to be maintained after natural weathering exposure.
No requirements are given for the use of colours, dimensions and tolerances of delineator posts and retroreflectors.

Ortsfeste, vertikale Straßenverkehrszeichen - Teil 3: Leitpfosten und Retroreflektoren

Dieser Teil 3 von EN 12899 legt Anforderungen für Leitpfosten und Rückstrahler (Reflektoren) im Neuzustand fest, die als getrennte Produkte oder als Kombination in Verkehrsbereichen verwendet werden.
Er behandelt Leistungsanforderungen und Prüfverfahren.
Farbmetrische und retroreflektive Eigenschaften sind unter Berücksichtigung der CIE-Empfehlungen festgelegt.
Konstruktionsanforderungen enthalten die Gebrauchstauglichkeit bei statischer und dynamischer Belastung.
Vorschriften bezüglich der Nutzungssicherheit, einschließlich des Anpralls eines Fahrzeuges, sind angegeben.
Zur Definition der Dauerhaftigkeit enthält diese Norm auch die Leistungsklassen, die bei dem Produkt nach der natürlichen Bewitterung immer noch vorhanden sein müssen.
Hinsichtlich der Verwendung von Farben, Maßen und Toleranzen von Leitpfosten und Rückstrahlern sind keine Anforderungen angegeben.

Signaux fixes de signalisation routière verticale - Partie 3: Délinéateurs et rétroréflecteurs

Stalna vertikalna cestna signalizacija - 3. del: Smerniki in svetlobno odbojna telesa

General Information

Status
Published
Publication Date
11-Feb-2008
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
23-Jan-2008
Due Date
29-Mar-2008
Completion Date
12-Feb-2008

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Fixed, vertical road traffic signs - Part 3: Delineator posts and retroreflectorsStalna vertikalna cestna signalizacija - 3. del: Smerniki in svetlobno odbojna telesaSignaux fixes de signalisation routière verticale - Partie 3: Délinéateurs et rétroréflecteursOrtsfeste, vertikale Straßenverkehrszeichen - Teil 3: Leitpfosten und RetroreflektorenTa slovenski standard je istoveten z:EN 12899-3:2007SIST EN 12899-3:2008en,de93.080.30ICS:SLOVENSKI

STANDARDSIST EN 12899-3:200801-marec-2008

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12899-3November 2007ICS 93.080.30 English VersionFixed, vertical road traffic signs - Part 3: Delineator posts andretroreflectorsSignaux fixes de signalisation routière verticale - Partie 3:Délinéateurs et rétroréflecteursOrtsfeste, vertikale Straßenverkehrszeichen - Teil 3:Leitpfosten und RetroreflektorenThis European Standard was approved by CEN on 4 February 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36

B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12899-3:2007: E

EN 12899-3:2007 (E) 2 Contents Page Foreword.............................................................................................................................................................3 Introduction........................................................................................................................................................4 1 Scope......................................................................................................................................................5 2 Normative references...........................................................................................................................5 3 Terms, definitions, symbols and abbreviations................................................................................6 4 Dimensions and tolerances.................................................................................................................7 5 Types of delineator post and retroreflector.......................................................................................7 5.1 Types of delineator post.......................................................................................................................7 5.2 Types of retroreflector..........................................................................................................................7 6 Performance requirements..................................................................................................................7 6.1 General...................................................................................................................................................7 6.2 Fixing of retroreflectors on delineator posts.....................................................................................8 6.3 Visual performance...............................................................................................................................8 6.4 Physical performance.........................................................................................................................10 7 Test methods.......................................................................................................................................12 7.1 Test conditions....................................................................................................................................12 7.2 Test products......................................................................................................................................12 7.3 Visual performance tests...................................................................................................................12 7.4 Physical performance tests...............................................................................................................13 8 Marking, labelling and product information.....................................................................................15 8.1 Complete traffic delineators, delineator posts only or fixed retroreflectors only........................15 8.2 Components........................................................................................................................................16 9 Evaluation of conformity....................................................................................................................16 10 Dangerous substances.......................................................................................................................16 Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU Construction Products Directive..........................................................................................17 ZA.1 Scope and relevant characteristics...................................................................................................17 ZA.2 Procedure for attestation of conformity of delineator posts and fixed retroreflectors......................................................................................................................................21 ZA.3

CE marking and labelling...................................................................................................................23

EN 12899-3:2007 (E) 3 Foreword This document (EN 12899-3:2007) has been prepared by Technical Committee CEN/TC 226 ''Road equipment'' the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2008, and conflicting national standards shall be withdrawn at the latest by August 2012. No existing European Standard is superseded. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association and supports essential requirements of EU Directives.

For relationship with EU Directives, see informative Annex ZA, which is an integral part of this document. This European Standard consists of the following Parts under the general title:

Fixed, vertical road traffic signs — Part 1: Fixed signs Part 2: Transilluminated traffic bollards (TTB) Part 3: (this part) Delineator posts and retroreflectors Part 4: Factory production control Part 5: Initial type testing It is based on performance requirements and test methods published in CEN, CENELEC, CIE (International Commission on Illumination) and ISO documents together with standards of the CEN member organizations. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EN 12899-3:2007 (E) 4 Introduction This European Standard is designed for use by road authorities. It can also be used by private developers who wish to use signs on their own land similar to those used on public highways. It can be used to implement type approval and certification testing. It derives from performance requirements and test methods published in CEN, CENELEC, CIE and ISO documents together with standards of the CEN member organizations.

EN 12899-3:2007 (E) 5 1 Scope This Part 3 of EN 12899 specifies requirements for new delineator posts and for new retroreflectors as separate products or combined together to be used in traffic circulation areas. It covers performance requirements and test methods. Colorimetric and retroreflective properties are specified taking into account CIE recommendations. Structural requirements include performance under static and dynamic loading. Provision is made for safety in use, including vehicle impact. To define durability this standard also includes performance levels to be maintained after natural weathering exposure.

No requirements are given for the use of colours, dimensions and tolerances of delineator posts and retroreflectors. 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. EN 12767, Passive safety of support structures for road equipment — Requirements and test methods EN 12899-1:2007, Fixed, vertical road traffic signs — Part 1: Fixed signs EN 12899-4:2007, Fixed, vertical road traffic signs — Part 4: Factory production control EN 12899-5:2007, Fixed, vertical road traffic signs — Part 5: Initial type testing EN ISO 877:1996, Plastics — Methods of exposure to direct weathering, to weathering using glass-filtered daylight, and to intensified weathering by daylight using Fresnel mirrors (ISO 877:1994) EN ISO 9001, Quality management systems — Requirements (ISO 9001:2000) ISO 4:1997, Information and documentation — Rules for the abbreviation of title words and titles of publications ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests ISO/CIE 10526, CIE standard illuminants for colorimetry ISO/CIE 10527, CIE standard colorimetric observers CIE 15, Colorimetry CIE 54.2, Retroreflection — Definition and measurement

EN 12899-3:2007 (E) 6 3 Terms, definitions, symbols and abbreviations For the purposes of this document, the symbols and abbreviations given in ISO 4:1997 and the following apply. 3.1 delineator post post, placed at the edge of a carriageway, to indicate the alignment of the road and/or to warn of a hazard during daytime conditions.

NOTE The delineator post can be equipped with one or more retroreflectors 3.2 ground line notional horizontal line on the delineator post which, when it is installed correctly, is level with the ground (see Figure 1) or with the top of the safety barrier (see Figure 2) on which it is installed NOTE Delineator posts are normally installed in the level part of the verge so as to fulfil their function of indicating the alignment of that part of the highway on which it is safe to drive and/or to indicate the presence of a hazard.

Key: 1 Carriageway 5 Verge 2 Height 6 Slope
3 Delineator post 7 Retroreflector 4 Ground line
Figure 1 — Illustration of ground line (1)
Key: 1 Carriageway 5 Verge 2 Safety barrier 6 Slope
3 Delineator post 7 Retroreflector 4 Ground line
Figure 2 — Illustration of ground line (2)

EN 12899-3:2007 (E) 7 3.3 retroreflector device, made using any available technology, that retroreflects incident light.

NOTE Retroreflectors may be installed on delineator posts 3.4 test product product (delineator post or retroreflector) in original size and design, or part of it prepared by the manufacturer or the supplier, to be subjected to testing in accordance with the applicable part of this standard 4 Dimensions and tolerances Dimensions and tolerances of delineators and retroreflectors shall conform to the customer’s requirements. 5 Types of delineator post and retroreflector 5.1 Types of delineator post The classification of types of delineator post shall be: D1

delineator posts for ground fixing which are not specifically designed to be reusable after the

impact test described in 7.4.1.3; D2 delineator posts for ground fixing which are designed to be reusable after the impact test

described in 7.4.1.3 (e.g. those posts which may be dislodged, but are designed to be

remounted);

D3 delineator posts for ground fixing which are designed to deflect and after the impact test as

described in 7.4.1.3 return to an upright position (spring-back or flexible); D4 delineator posts for fixing to structures (fixed), e.g. bridges, crash barriers and guard rails. 5.2 Types of retroreflector The classification of types of retroreflector shall be: — R1 retroreflective sheeting (material); — R2 plastic corner cube retroreflectors; — R3 biconvex glass retroreflectors. 6 Performance requirements 6.1 General All parts of delineator posts of types D1, D2 and D3 shall present no sharp edges above the ground line. If the materials are suitable for recycling this shall be indicated by the appropriate material code.

EN 12899-3:2007 (E) 8 6.2 Fixing of retroreflectors on delineator posts When fitted, retroreflectors shall be permanently fixed to delineator posts using a fixing method appropriate to the type and in accordance with the manufacturer’s instructions.

6.3 Visual performance 6.3.1 Daytime chromaticity coordinates and luminance factor of delineator posts When tested in accordance with 7.3.1, the chromaticity coordinates and luminance factor of the surfaces of delineator posts shall conform to Table 1. Table 1 — Chromaticity coordinates and luminance factors of surface colours of delineator posts : 1 2 3 4 Luminance factor Colour x y x y x y x y β White 0,350 0,360 0,300 0,310 0,290 0,320 0,340 0,370 ≥0,75 Yellow 0,522 0,477 0,470 0,440 0,427 0,483 0,465 0,534 ≥0,45 Red 0,735 0,265 0,674 0,236 0,569 0,341 0,655 0,345 ≥0,07 Green 0,313 0,682 0,313 0,453 0,177 0,362 0,026 0,399 ≥0,10 Black 0,385 0,355 0,300 0,270 0,260 0,310 0,345 0,395 ≤0,06

6.3.2 Retroreflectors 6.3.2.1 Daytime chromaticity coordinates and luminance factor When tested in accordance with 7.3.2.1, the initial chromaticity coordinates and the luminance factors of the surfaces shall conform to EN 12899-1:2007, Table 1 or 2.

6.3.2.2 Night-time chromaticity of retroreflectors When illuminated with CIE Standard Illuminant A and tested in accordance with 7.3.2.2, the retroreflected radiation of retroreflectors shall have initial chromaticity coordinates that lie within the regions defined in Table 2. The nighttime chromaticity of retroreflective materials using microprismatic technology can be found in the relevant European Technical Approval (ETA).

EN 12899-3:2007 (E) 9 Table 2 — Corner points of chromaticity regions for retroreflected radiation of retroreflectors

1 2 3 4 5 Colour x y x y x y x y x y White/ uncoloured 0,390 0,410 0,440 0,440 0,500 0,440 0,500 0,390 0,420 0,370 Yellow

0,513 0,487 0,500 0,470 0,545 0,425 0,572 0,425
Amber 0,560
0,440 0,530 0,440 0,583 0,387 0,612 0,387
Orange
0,645 0,355 0,615 0,355 0,565 0,405 0,595 0,405
Red
0,652 0,348 0,622 0,348 0,714 0,256 0,735 0,265
Green
0,320 0,675 0,320 0,520 0,245 0,400 0,028 0,400

If two of the points lie on the spectrum locus line, they shall not be connected by a straight line but shall be joined by the boundary of the spectrum locus. NOTE It is recommended that orange be not used in the same field of view as red.

6.3.2.3 Coefficient of retroreflection RA All photometric tests shall be carried out in accordance with 7.3.2.3.

The minimum initial coefficient of retroreflection RA of type R1 retroreflectors shall be classified as follows: — R1, class RA1 as specified in EN 12899-1:2007, Table 3; — R1, class RA2 as specified in EN 12899-1:2007, Table 4; — R1, class 3 as specified in Table 3 of this standard multiplied by the appropriate colour factor given in Table 6. Table 3 — Minimum initial coefficient of retroreflection RA for type R1,

class 3 retroreflectors Entrance angle β2 (ß1 = 0°) Observation angle α Coefficient of retroreflection RA cd·lx-1·m-2

Type 1, class 3 +5° 20' 300 +30° 2,0° 2,5

NOTE Type R1, class RA1 and class RA2 refer to retroreflective sheeting based on glass bead technology. Type R1, class 3 refers to retroreflective sheeting based on microprismatic technology. The minimum initial coefficient of retroreflection RA of type R2 retroreflectors shall conform to Table 4 multiplied by the appropriate colour factor given in Table 6.

EN 12899-3:2007 (E) 10 Table 4 — Minimum initial coefficient of retroreflection RA for type R2 retroreflectors Entrance angle β2 (ß1 = 0°) Observation angle α Coefficient of retroreflection RAcd·lx-1·m-2 Coefficient of retroreflection RA cd·lx-1·m-2

class 1 class 2 +5° 20' 200 400 +30° 2,0° 0,8 2,5

The minimum initial coefficient of retroreflection RA of type R3 retroreflectors shall conform to Table 5 multiplied by the appropriate colour factor given in Table 6. Table 5 — Minimum initial coefficient of retroreflection RA for type R3 retroreflectors Entrance angle β2 (ß1 = 0°)

Observation angle α Coefficient of retroreflection RA cd·lx-1·m-2 +5° 20' 120 +30° 2,0° 2,0

Table 6 — Colour factors for retroreflectors Colour Colour factor of
retroreflectors White 1,0 Yellow 0,6 Amber 0,5 Orange 0,3 Red 0,2 Green 0,2

6.4 Physical performance 6.4.1 Delineator posts 6.4.1.1 Static requirement (wind loading) When tested in accordance with 7.4.1.1, delineator posts of types D1, D2 and D3 shall not be damaged or show a permanent deflection not exceeding 5 % of the height above the ground line. The temporary deflection shall not exceed the values shown in Table 7. Table 7 — Static load – maximum temporary deflection Classes Maximum temporary deflection of delineator

post height above ground line WL 0 No performance determined WL 1 15 % WL 2 5 %

6.4.1.2 Dynamic impact resistance (material requirement) When tested in accordance with 7.4.1.2, delineator posts of types D1 and D2 shall remain intact and type D3 shall return to the vertical. No delineator post shall be damaged or splintered into pieces.

EN 12899-3:2007 (E) 11 There shall be no permanent deflection greater than 5 % of the height above the ground line. Measurement of permanent deflection shall be carried out 24 h after the material test. 6.4.1.3 Dynamic impact resistance (functional requirement) When tested in accordance with 7.4.1.3, delineator posts of type D1 need not remain reusable, delineator posts of type D2 shall remain reusable and delineator posts of type D3 shall remain reusable and return to the vertical after the test procedure. There shall be no permanent deflection of types D2 or D3 greater than 5 % of the height above the ground line. Measurement of permanent deflection shall be carried out 24 h after the functional test. 6.4.1.4 Dynamic impact resistance (crash requirement) Delineator posts of the types D1, D2 and D3 with a mass of more than 6 kg shall be tested in accordance with 7.4.1.4.

6.4.1.5 Corrosion resistance

If delineator posts use metal parts, which are coated with plastics, they shall be subjected to a neutral salt spray test in accordance with 7.4.1.5.

After the test, the samples shall show no evidence of corrosion such as rust stains or blistering of the coating, or any other change in appearance compared with an untreated sample.

This test is not applicable for hot dipped galvanised parts. Hot dipped parts shall be galvanised in accordance with ISO 1461. 6.4.1.6 Natural weathering After exposure in accordance with 7.4.1.6, daytime visibility and impact resistance shall be tested. Daytime visibility shall conform to the requirements of Table 1. After the impact resistance test in accordance with 7.4.1.2, delineator posts shall not break or splinter into pieces. 6.4.2 Retroreflectors 6.4.2.1 Dynamic impact resistance

When tested in accordance with 7.4.2.2 using one of the drop heights specified in Table 8, retroreflectors shall show no cracking or delamination outside a circle of 12 mm radius with the point of impact as centre.

Table 8 — Drop height DH in dynamic impact test for retroreflectors Class Drop height of steel ball (mm) DH 0 No performance determined DH 1 200 DH 2 400

6.4.2.2 Corrosion resistance

Tests shall be carried out only on metallized retroreflectors. After exposure in accordance with 7.4.2.3, the mean coefficient of retroreflection shall be not less than 80 % of the values required in 6.3.2.3 as appropriate.

EN 12899-3:2007 (E) 12 6.4.2.3 Water resistance

After exposure in accordance with 7.4.2.4, the retroreflectors shall show no water or water vapour intake on the optical parts. Water or water vapour penetration into the edges of R1 retroreflectors shall not be deemed to indicate failure. 6.4.2.4 Durability Type R1, class RA1 and class RA2 retroreflectors shall be exposed for 3 years in accordance with EN ISO 877:1996, Method A and then be tested in accordance with EN 12899-1:2007, 4.1.1.5.

Type R1, class 3, type R2 and type R3 retroreflectors shall be exposed for 2 years in accordance with EN ISO 877:1996, Method A. Chromaticity coordinates of the retroreflected radiation shall be within the regions defined in Table 2 of this standard.

The coefficient of retroreflection shall be not less than 80 % of the values required in 6.3.2.3. After subjecting to the impact resistance test in accordance with 7.4.2.2, there shall be no cracking or delamination outside a circle of 12 mm radius with the point of impact as centre.

7 Test methods 7.1 Test conditions

If not specified, tests shall be carried out at a temperature of (23 ± 2) °C and a relative humidity of (50 ± 5) %. Tests shall be carried out separately on delineator posts and on retroreflectors.

7.2 Test products All test products shall be representative of normal production. For testing, retroreflectors of type R1 shall be bonded on to aluminium plates with a minimum thickness of 2 mm. 7.3 Visual performance tests 7.3.1 Daytime visibility of delineator posts Measurements shall be made on three delineator posts, in accordance with the procedures specified in CIE 15 using Standard Illuminant D65 and CIE 45/0 geometry.

7.3.2 Retroreflectors 7.3.2.1 Daytime visibility Measurements shall be made on three type R1, class RA1 and class RA2 retroreflector test products in accordance with the procedures specified in CIE 15 using Standard Illuminant D65 and CIE 45/0 geometry. 7.3.2.2 Night-time chromaticity of retroreflectors Measurements shall be made on five retroreflectors, in accordance with the procedure specified in CIE 54.2 using CIE Standard Illuminant A. Colour functions and calculation methods shall be in accordance with ISO/CIE 10526 and ISO/CIE 10527 (2° visual field).

Measuring geometry: observation angle α = 20’, entrance angle β2 = +5°, β1 = 0°.

EN 12899-3:2007 (E) 13 7.3.2.3 Coefficient of retroreflection RA Measurements shall be made on five retroreflector samples, in accordance with the procedures specified in CIE 54.2, using CIE Standard Illuminant A and using a photometer head adapted to the relative spectral response of the CIE Standard Photometric Observer.

7.4 Physical performance tests 7.4.1 Delineator posts 7.4.1.1 Static test (deflection under wind loading) Static tests shall be carried out as follows. Precondition three new delineator posts for at least 4 h at a temperature of (23 ± 2) °C. They shall be fixed horizontally in a base clamp so that the ground line is level with the top of the clamp. Apply a test load in the traffic direction corresponding to 0,42 kN/m2 in the middle of the delineator post. After 120 s measure the temporary deflection at the top of the delineator post with the test load still applied. Remove the test load and after 120 s measure the permanent deflection at the top of the delineator post. Report the measured values of the temporary and permanent deflection as a percentage of the total height of delineator above the ground line. 7.4.1.2 Dynamic impact resistance test (material test)

Dynamic impact resistance tests (material) shall be carried out as follows: Precondition three new delineator posts for at least 4 h at a temperature of (-20 ± 2) °C. An appropriate pendulum impact machine shall be used and test delineator posts shall be fixed in a base clamp so that the ground line is level with the top of the clamp. The pendulum bumper shall be flat and 250 mm x 500 mm in size and shall strike the delineator with its upper edge 150 mm below the top. The length of the pendulum to the centre of the bumper shall be (1 000 ± 20) mm. The impact energy striking the delineator shall be in a direction parallel to the road and shall be 150 Nm (see Figure 3).

Figure 3 — Dynamic impact test equipment

EN 12899-3:2007 (E) 14 7.4.1.3 Dynamic impact resistance test (functional test) Dynamic impact resistance tests (functional tests) shall be carried out as follows. Precondition three new delineator posts for at least 4 h at a temperature of (23 ± 2) °C. Delineator posts which are driven directly into the soil shall be fixed for the test in a base clamp so that their ground line is level with the top of the clamp. Other delineator posts shall be installed in accordance with the manufacturer’s instructions so as not to interfere with their intended function. The same pendulum device as described in 7.4.1.2 shall be used and shall strike the delineator post with the lower edge of its bumper 250 mm above the ground line.

Impact energy shall strike the delineator simulating an impact in the direction of travel and shall be 300 Nm. 7.4.1.4 Dynamic impact resistance test (crash test) Dynamic impact resistance tests (crash tests) shall be carried out as follows. The test shall be carried out only on delineator posts with a mass of more than 6 kg. Three delineator posts shall be tested and the results expressed in accordance with EN 12767 for unharmful support structures with a speed of 70 km/h. Test delineator posts shall be installed in accordance with the manufacturer’s instructions. 7.4.1.5 Corrosion resistance test

The metal parts of three delineator posts, which are coated with plastics shall be subjected to the neutral salt spray test in accordance with ISO 9227 at (35 ± 2) °C for a duration of 240 h. For hot dipped galvanised metal parts the thickness of galvanisation shall be tested in accordance with ISO 1461. For all other metal parts, whether coated or not, they shall be subject to the salt spray test in accordance with EN ISO 9227 at (35 ± 2) °C for a duration of 240 h. 7.4.1.6 Natural weathering test Three delineator posts shall be tested for a continuous period of 2 years in accordance with EN ISO 877:1996, Method A, inclined at an angle of 45° to the horizontal and facing the equator. They shall be fixed in an appropriate test rack by means of a base clamp so that the ground line will be level with the clamp. Before testing daytime visibility in accordance with 6.3.1 and impact resistance in accordance with 6.4.1.2, test products shall be cleaned and conditioned in accordance with the provisions in 7.1. 7.4.2 Retroreflectors 7.4.2.1 General For these tests, type R1 retroreflectors shall be prepared as described in 7.2. 7.4.2.2 Dynamic impact resistance test

Dynamic impact resistance tests shall be carried out as follows. Three retroreflectors shall be preconditioned for at least 4 h at a temperature of (-20 ± 2) °C and (23 ± 2) °C. Position them on a 15 mm thick steel plate. Impact the faces of the retroreflectors in the centre of the retroreflective area (excluding holes and joints) allowing a steel ball with a diameter of 20 mm to fall from a height as specified in Table 8.

EN 12899-3:2007 (E) 15 7.4.2.3 Corrosion resistance test

Three retroreflectors shall be subjected to the neutral salt spray test in accordance with ISO 9227 at (35 ± 2) °C for a duration of 96 h. They shall be cleaned carefully before measurement.

The measurement geometry shall be:

— for type R1, class RA1 and RA2 retroreflectors: observation angle 20’, entrance angle β1 = +5° and β2 = 0°; — for type R1, class 3, type R2 and type R3 retroreflectors: observation angle 20’, entrance angle β1 = 0° and β2 = +5°. 7.4.2.4 Water resistance test

Water resistance tests shall be carried out as follows. Precondition three retroreflectors by keeping them at a temperature of (23 ± 2) °C and (70 ± 5) % relative humidity for at least 4 h before testing. Fill two beakers with distilled water to a level such that the three retroreflectors will be totally immersed. Heat the water in the first beaker to a constant temperature of (60 ± 2) °C. Cool the water in the second beaker to a constant temperature of (5 ± 2) °C. Subject the retroreflectors to 1 h total immersion in the heated water then transfer them to the cooled water. Repeat this cycle five times. After termination of the test cycles, remove the retroreflectors from the water and dry them with a towel. Put the test products on a heated plate with a temperature between 30 °C and 40 °C and examine for 15 min for any visible signs of water ingress without taking the edges of type R1 retroreflectors into consideration. 7.4.2.5 Natural weathering test

Three retroreflectors shall be tested in accordance with EN ISO 877:1996, Method A, inclined at an angle of 45° to the horizontal and facing the equator. Type R1, class RA1 and class RA2 retroreflectors shall be exposed for

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