DRAFT UGANDA STANDARD

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DRAFT UGANDA STANDARD

DUS 402:2020

Second Edition 2020-mm-dd

Reference number DUS 402-n: 2020

Motor vehicles — Portable reflective warning triangles

element — Specification

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Compliance with this standard does not, of itself confer immunity from legal obligations

A Uganda Standard does not purport to include all necessary provisions of a contract. Users are responsible for its correct application

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilised in any form or by any means, electronic or mechanical, including photocopying and microfilm, without prior written permission from UNBS.

Requests for permission to reproduce this document should be addressed to The Executive Director

Uganda National Bureau of Standards P.O. Box 6329

Kampala Uganda

Tel: +256 414 333 250/1/2/3 Fax: +256 414 286 123 E-mail: [email protected] Web: www.unbs.go.ug .

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Foreword

Uganda National Bureau of Standards (UNBS) is a parastatal under the Ministry of Trade, Industry and Cooperatives established under Cap 327, of the Laws of Uganda, as amended. UNBS is mandated to co- ordinate the elaboration of standards and is

(a) a member of International Organisation for Standardisation (ISO) and

(b) a contact point for the WHO/FAO Codex Alimentarius Commission on Food Standards, and (c) the National Enquiry Point on TBT Agreement of the World Trade Organisation (WTO).

The work of preparing Uganda Standards is carried out through Technical Committees. A Technical Committee is established to deliberate on standards in a given field or area and consists of key stakeholders including government, academia, consumer groups, private sector and other interested parties.

Draft Uganda Standards adopted by the Technical Committee are widely circulated to stakeholders and the general public for comments. The committee reviews the comments before recommending the draft standards for approval and declaration as Uganda Standards by the National Standards Council.

The committee responsible for this document is Technical Committee UNBS/TC 8, transport and communication

This second edition cancels and replaces the first edition (US 402:1993), which has been technically revised.

The significant changes that have made are;

In clause 4

i. this edition now references to the current Uganda Standard CDUS 2256:2020 for the adhesive backing material requirements replacing the US 401:2003 that was withdraw.

ii. The table types (I-VI) of sheeting materials specified in CDUS 2256:2020 have been introduced Editorial changes

the format of the standard has been aligned to the current UNBS Standards template. Section numbering order has changed.

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UGANDA STANDARD US nnnn-n: 2020

Motor vehicles — Portable reflective warning triangles — Specification

1 Scope

This standard specifies requirements for portable retro-reflective triangular road safety signs for indicating temporary obstruction in a roadway, which may constitute a traffic hazard

2 Normative references

For the purposes of this document, the following terms and definitions apply.

CDUS 2256:2020 Standard Specification for Retroreflective Sheeting for Traffic Control

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

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

— ISO Online browsing platform: available at http://www.iso.org/obp 3.1

Safety Sign

a sign that gives a general safety message obtained by a combination of colour and geometric shape and which by the addition of a graphic symbol or text gives a particular safety message.

3.2

Safety Colour:

colour of special properties, to which a safety meaning is attributed.

Note: The purpose of safety colours is to draw fast attention to objects and situations affecting safety and health. Safety signs shall only be used in these circumstances.

3.3

Acceptable:

acceptable in relation to this standard, for use under outdoor conditions of temperatures 150 up to 450C and humidity 50% to 95%.

4 MATERIALS AND ESSENTIAL FEATURES

4.1 General Form: The safety sign shall be in form of an equilateral triangle, of dimensional requirements specified in Section 5 of this standard.

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2

TABLE 1 Type I Sheeting

Observati on Angle

Entrance

angle White Yellow Orange Green Red Blue Brown

0.2

°

-4° 70

50

25 9.0

14 4.0 1.0

0.2° +30° 30 22 7.0 3.5 6.0 1.7 0.3

0.5° -4° 30 25 13 4.5 7.5 2.0 0.3

0.5° +30° 15 13 4.0 2.2 3.0 0.8 0.2

Minimum Coefficient of Retro reflection (R^A) cd/fc/ft² (cd·lx^–1·m^–2)

Table 2 Type II Sheeting Observa

tion Angle

Entranc e Angle

White Yellow Orange Green Red Blue Brown

0.2° –4° 140 100 60 30 30 10 5.0

0.2° +30° 60 36 22 10 12 4.0 2.0

0.5° –4° 50 33 20 9.0 10 3.0 2.0

0.5° +30° 28 20 12 6.0 6.0 2.0 1.0

Minimum Coefficient of Retro reflection (RA) cd/fc/ft² (cd·lx^–1·m^–2)

Table 3 Type III Sheeting Observa

tion Angle

Entranc e Angle

0.2° –4° 250 170 100 45 45 20 12

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0.2° +30° 150 100 60 25 25 11 8.5

0.5° –4° 95 62 30 15 15 7.5 5.0

0.5° +30° 65 45 25 10 10 5.0 3.5

TABLE 4 Type IV Sheeting Observa

tion Angle

Entranc e Angle

White Yellow Oran ge

Gre en

Red Blue Purpl e

Brown

Fluore scent Yellow- Green

Fluore scent Yellow

Fluor e scent Oran ge

0.20° –4° 360 270 145 50 65 30 14

18 290 220 105

0.20° +30° 170 135 68 25 30 14 6.8

8.5 135 100 50

0.50° –4° 150 110 60 21 27 13 6.0

7.5 120 90 45

0.50° +30° 72 54 28 10 13 6 2.9

3.5 55 40 22

TABLE 5 Type V Sheeting

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4

tion Angle

Entranc e Angle

0.20° –4° 700 470 280 120 120 56 28

0.20° +30° 400 270 160 72 72 32 16

0.50° –4° 160 110 64 28 28 13 6.4

0.50° +30° 75 51 30 13 13 6.0 3.0

TABLE 6 Type VI Sheeting Observ

ation Angle

Entranc e Angle

White Yellow Orang e

Gre en

Re d

Blue Purpl e

Fluoresce nt Yellow- Green

Fluore scent Yellow

Fluore scent Orange

Fluore scent Pink

0.20° –4° 500 270 145 50 65 30 18 400 300 200 150

0.20° +30° 200 135 68 25 30 14 8.5 160 120 80 60

0.50° –4° 225 110 60 21 27 13 7.5 180 135 90 65

0.50° +30° 85 60 21 10 13 6 3.5

68 51 34 25

4.3 Coefficient of Retro-reflection Value, R:

To determine conformity with this standard, a retroreflective piece of size 12.5 cm x 5.0 cm of the safety sign shall be subjected to experimental testing procedures elaborated in WDUS 2256:2020 the specimen shall meet the minimum requirements of this standard.

4.4 Specular Gloss Value:

The test specimen in Clause 3.3 when subjected to the specular gloss test described US 2256:2020 shall comply with the requirements specified in the same standard.

Add table

4.5 The Adhesive Backing:

The material behind the retroreflective sheeting shall be of a class (there are 6 classes) meeting the requirements of clause 7.5 of US 2256:2020.

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4.6 Support: Where the retroreflective sheeting material is flexible and incapable of standing stiffly unsupported, it shall be adhered to a plate of mild steel of minimum thickness 0.8 mm; which shall be impact resistant.

4.7 Contrast Colours:

The contrast colours for the safety sign shall be retroreflective red, a prohibition colour for the triangular body, to contrast with the inner triangular portion that shall be either black (or hollow) or white. The retroreflective red and white colour hues shall meet the requirements specified in US 2256:2020.

4.8 The triangular body of the safety sign shall have one or both faces retroreflective. Daytime and night colours shall have substantially the same hues.

4.9 The exposed surfaces of the retroreflective sign and the base shall be protected against corrosion and rust, and shall be scratch resistant.

The surfaces shall be free from any foreign marks including mounting holes.

4.10 The safety sign shall incorporate means by which it can be made to stand upright on the road surface and be maintained upright without movement in winds having a velocity of 48 kph (kilometers per hour).

The supports shall be such as will not damage the road surface

5 DIMENSIONS

5.1 The signs shall have the dimensions specified in Table 1

Dimensions in millimetres

Minimum Values mm

Outer equi-triangular side 440

Inner equi-triangular side

295

Triangular body width 45

5.2 The following options or versions of the sign shall be acceptable:- (i)Retroreflective triangular sign with hollow centre;

(ii)Triangular sign, all solid, both triangular body and white centre retroreflective;

(iii)Triangular sign as in (ii) but with a black non-retroreflective exclamation symbol (dimensions in Fig. 2) to contrast with the central white portion.

6 STORAGE AND PACKAGING

Each pair of signs shall be supplied in a suitable durable container to prevent undue scratching during storage.

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6 7 MARKING

The sign shall be indelibly marked with the following:

(i)The name and/or registered trade mark of the manufacturer.

(ii)Type of retroreflective sheeting and class of the adhesive backing material used paragraph with an element of text styled as special (in this case a designation):

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ANNEX A (Informative)

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8 Quality verification of retro-reflective and non-retro-reflective black sheeting material .

When a purchaser requires ongoing verification of the quality of retro-reflective and non-retroreflective black sheeting material, it is recommended that, instead of concentrating solely on evaluation of the final product, he/she also direct his/her attention to the manufacturer's quality system. In this connection it should be noted that MS-ISO 9001 covers the provisions of an integrated quality system.

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Bibliography

[1] KS 03-814: 1987 - Kenya specification for portable reflective warning triangles for motor vehicles.

[2] ARS 161 : 1986 - Communication safety colours and safety signs of ARSO

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Certification marking

Products that conform to Uganda standards may be marked with Uganda National Bureau of Standards (UNBS) Certification Mark shown in the figure below.

The use of the UNBS Certification Mark is governed by the Standards Act, and the Regulations made thereunder. This mark can be used only by those licensed under the certification mark scheme operated by the Uganda National Bureau of Standards and in conjunction with the relevant Uganda Standard. The presence of this mark on a product or in relation to a product is an assurance that the goods comply with the requirements of that standard under a system of supervision, control and testing in accordance with the certification mark scheme of the Uganda National Bureau of Standards. UNBS marked products are continually checked by UNBS for conformity to that standard.

Further particulars of the terms and conditions of licensing may be obtained from the Director, Uganda National Bureau of Standards.

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