AS/NZS 1906.1:2007 Australian/New Zealand Standard ™
Retroreflective materials and devices for road traffic control purposes Part 1: Retroreflective sheeting
A S / N Z S 1 9 0 6 . 1 : 2 0 0 7 C o p y r i g h t S t a n d a r d s N e w Z e a l a n d * AS/NZS 1906.1:2007
This Joint Australian/New Zealand Standard was prepared by Joint Technical Committee MS-049, Retroreflective Devices.
It was approved on behalf of the Council of Standards Australia on 19 January 2007 and on behalf of the Council of Standards New Zealand on 2 February 2007.
This Standard was published on 21 February 2007.
The following are represented on Committee MS-049: AUSTROADS Accident Compensation Corporation, New Zealand Australian Chamber of Commerce and Industry Australian Industry Group AWTA Textile Testing Land Transport Safety Authority, New Zealand National Association of Testing Authorities Australia Roadmarking Industry Association of Australia Road Safety Manufacturers Association, New Zealand The University of New South Wales Transit New Zealand Victorian College of Optometry Keeping Standards up-to-date Standards are living documents which reflect progress in science, technology and systems. To maintain their currency, all Standards are periodically reviewed, and new editions are published. Between editions, amendments may be issued. Standards may also be withdrawn. It is important that readers assure themselves they are using a current Standard, which should include any amendments which may have been published since the Standard was purchased. Detailed information about joint Australian/New Zealand Standards can be found by visiting the Standards Web Shop at www.standards.com.au or Standards New Zealand web site at www.standards.co.nz and looking up the relevant Standard in the on-line catalogue. Alternatively, both organizations publish an annual printed Catalogue with full details of all current Standards. For more frequent listings or notification of revisions, amendments and withdrawals, Standards Australia and Standards New Zealand offer a number of update options. For information about these services, users should contact their respective national Standards organization. We also welcome suggestions for improvement in our Standards, and especially encourage readers to notify us immediately of any apparent inaccuracies or ambiguities. Please address your comments to the Chief Executive of either Standards Australia or Standards New Zealand at the address shown on the back cover. This Standard was issued in draft form for comment as DR 05585. * O n 1 2 / 0 9 / 2 0 1 2 1 1 : 4 9 A M B L A C K O U T P O W E R P R O D U C T S L T D p u r c h a s e d a s i n g l e u s e l i c e n c e t o s t o r e t h i s d o c u m e n t o n a s i n g l e c o m p u t e r . B L A C K O U T P O W E R P R O D U C T S L T D m a y p r i n t a n d r e t a i n o n e c o p y o n l y . C o p y r i g h t S t a n d a r d s N e w Z e a l a n d * Single User PDF Download Terms & Conditions You have downloaded material which is subject to strict conditions of use. Copyright in this material is owned by Standards New Zealand. Please read these terms and conditions carefully, as in addition to the usual range of civil remedies available to Standards New Zealand for infringement of copyright, under New Zealand law every person who infringes copyright may be liable to a fine not exceeding $50,000 or to imprisonment for a term not to exceed three months. You have purchased a single-user licence to store this non-reviseable Adobe Acrobat PDF file on your personal computer. You may print out and retain ONE printed copy only. Standards New Zealand retains title and ownership of the copyright in this PDF file and the corresponding permitted printed copy at all times. Under this license use of both the PDF file and the single permitted printed copy of this PDF file you may make are restricted to you. Under no circumstances are you permitted to sell, transfer or copy this PDF file, the one permitted printed copy of this PDF file, or any part of either of them. You undertake that you will not modify, adapt, translate, reverse engineer, decompile, disassemble or create derivative works based on any of the downloaded PDF file, nor will you merge it with any other software or document, even for internal use within your organization. Under no circumstances may this PDF file be placed on a network of any sort without the express permission of Standards New Zealand. You are solely responsible for the selection of this PDF file and any advice or recommendation given by Standards New Zealand or its employees or agents about any aspect of this PDF file is intended for guidance only and is followed or acted upon entirely at your own risk. Standards New Zealand is not aware of any inherent risk of viruses in this PDF file at the time that it is downloaded. Standards New Zealand has exercised due diligence to ensure, so far as practicable, that this file does not contain such viruses. No warranty of any form is given by Standards New Zealand or by any party associated with Standards New Zealand with regard to this PDF file, and you accept and acknowledge that Standards New Zealand will not be liable in any way to you or any to other person in respect of any loss or damage, however caused which may be suffered or incurred or which may arise directly or indirectly through any use of this PDF file. Regardless of where you were when you downloaded this PDF file you accept and acknowledge that to the fullest extent possible you submit to New Zealand law with regard to this licence and to your use of this PDF file. * O n 1 2 / 0 9 / 2 0 1 2 1 1 : 4 9 A M B L A C K O U T P O W E R P R O D U C T S L T D p u r c h a s e d a s i n g l e u s e l i c e n c e t o s t o r e t h i s d o c u m e n t o n a s i n g l e c o m p u t e r . B L A C K O U T P O W E R P R O D U C T S L T D m a y p r i n t a n d r e t a i n o n e c o p y o n l y . C o p y r i g h t S t a n d a r d s N e w Z e a l a n d * NOTES * O n 1 2 / 0 9 / 2 0 1 2 1 1 : 4 9 A M B L A C K O U T P O W E R P R O D U C T S L T D p u r c h a s e d a s i n g l e u s e l i c e n c e t o s t o r e t h i s d o c u m e n t o n a s i n g l e c o m p u t e r . B L A C K O U T P O W E R P R O D U C T S L T D m a y p r i n t a n d r e t a i n o n e c o p y o n l y . C o p y r i g h t S t a n d a r d s N e w Z e a l a n d * AS/NZS 1906.1:2007 Australian/New Zealand Standard ™ Retroreflective materials and devices for road traffic control purposes Part 1: Retroreflective sheeting COPYRIGHT © Standards Australia/Standards New Zealand All rights are reserved. No part of this work may be reproduced or copied in any form or by any means, electronic or mechanical, including photocopying, without the written permission of the publisher. Jointly published by Standards Australia, GPO Box 476, Sydney, NSW 2001 and Standards New Zealand, Private Bag 2439, Wellington 6020 ISBN 0 7337 8050 4 Originated in Australia as SAA Int. 354-1955. Previous edition AS/NZS 1906.1:1993. Second edition 2007. * O n 1 2 / 0 9 / 2 0 1 2 1 1 : 4 9 A M B L A C K O U T P O W E R P R O D U C T S L T D p u r c h a s e d a s i n g l e u s e l i c e n c e t o s t o r e t h i s d o c u m e n t o n a s i n g l e c o m p u t e r . B L A C K O U T P O W E R P R O D U C T S L T D m a y p r i n t a n d r e t a i n o n e c o p y o n l y . C o p y r i g h t S t a n d a r d s N e w Z e a l a n d * AS/NZS 1906.1:2007 2 PREFACE This Standard was prepared by the Joint Australia/New Zealand Committee MS-049, Retroreflective Devices and supersedes AS/NZS 1906.1:1993, Retroreflective materials and devices for road traffic control purposes, Part 1: Retroreflective materials. It is one of a series of Standards on retroreflective devices as follows: AS/NZS 1906 Retroreflective materials and devices for road traffic control purposes 1906.1 Part 1: Retroreflective sheeting (this Standard) 1906.2 Part 2: Retroreflective devices (non-pavement application) 1906.4 Part 4: High visibility materials for safety garments AS 1906 Retroreflective materials and devices for road traffic control purposes 1906.3 Part 3: Raised pavement markers (retroreflective and non-retroreflective) The objective of this Standard is to provide road authorities, manufacturers and testing authorities with a uniform supply specification for retroreflective sheeting. The following are the principal changes and additions to this edition: (a) Introduction of Class 1W microprismatic retroreflective sheeting. (b) Introduction of retroreflective sheeting specifically designed for motor vehicle number plates. (c) CIL and colour specification and measurement for fluorescent sheeting. (d) Specification of durability test exposures in terms of radiant energy received rather than by exposure time. (e) Revised test for performance under simulated rainfall conditions. (f) New informative appendix on selection and use of sheeting. The terms ‘normative’ and ‘informative’ have been used in this Standard to define the application of the appendix to which they apply. A ‘normative’ appendix is an integral part of a Standard, whereas an ‘informative’ appendix is only for information and guidance. * O n 1 2 / 0 9 / 2 0 1 2 1 1 : 4 9 A M B L A C K O U T P O W E R P R O D U C T S L T D p u r c h a s e d a s i n g l e u s e l i c e n c e t o s t o r e t h i s d o c u m e n t o n a s i n g l e c o m p u t e r . B L A C K O U T P O W E R P R O D U C T S L T D m a y p r i n t a n d r e t a i n o n e c o p y o n l y . C o p y r i g h t S t a n d a r d s N e w Z e a l a n d * 3 AS/NZS 1906.1:2007 CONTENTS Page FOREWORD.............................................................................................................................. 4 SECTION 1 SCOPE AND GENERAL 1.1 SCOPE ........................................................................................................................ 5 1.2 REFERENCED DOCUMENTS .................................................................................. 5 1.3 DESCRIPTION ........................................................................................................... 5 1.4 DEFINITIONS ............................................................................................................ 6 1.5 CLASSIFICATION..................................................................................................... 8 SECTION 2 REQUIREMENTS FOR SHEETINGS OTHER THAN FOR NUMBER PLATES 2.1 PHOTOMETRIC PROPERTIES................................................................................. 9 2.2 COLOUR..................................................................................................................... 9 2.3 RAINFALL PERFORMANCE.................................................................................. 16 2.4 PHYSICAL PROPERTIES ....................................................................................... 16 2.5 ADHESIVE............................................................................................................... 17 2.6 DURABILITY........................................................................................................... 18 2.7 COLOUR-PROCESSING PROPERTIES.................................................................. 19 2.8 PACKAGING............................................................................................................ 20 2.9 SHELF LIFE ............................................................................................................. 20 2.10 MARKING................................................................................................................ 20 SECTION 3 SHEETINGS FOR MOTOR VEHICLE NUMBER PLATES-CLASSES NP AND NP(EMB) 3.1 PHOTOMETRIC PROPERTIES............................................................................... 21 3.2 COLOUR................................................................................................................... 22 3.3 RAINFALL PERFORMANCE.................................................................................. 22 3.4 PHYSICAL PROPERTIES........................................................................................ 23 3.5 ADHESIVE............................................................................................................... 23 3.6 DURABILITY........................................................................................................... 23 3.7 COLOUR-PROCESSING PROPERTIES.................................................................. 23 3.8 PACKAGING............................................................................................................ 24 3.9 SHELF LIFE ............................................................................................................. 24 3.10 MARKING................................................................................................................ 24 APPENDICES A PHOTOMETRIC PROPERTIES TEST..................................................................... 25 B SELECTION AND USE OF RETROREFLECTIVE SHEETING............................. 29 C COLOUR AND LUMINANCE FACTOR TESTS-FLUORESCENT AND NON- FLUORESCENT SHEETING................................................................................... 33 D CIE CHROMATICITY LIMITS (COLOUR SPACES) FOR COLOUR DESIGNATION ....................................................................................................... 36 E PHOTOMETRIC PERFORMANCE TEST UNDER SIMULATED RAIN CONDITIONS ................................................................................................ 43 F PHYSICAL PROPERTIES TEST ............................................................................. 46 G SOLVENT RESISTANCE TEST.............................................................................. 50 H ADHESIVE PROPERTIES TESTS........................................................................... 51 I DURABILITY TESTS .............................................................................................. 53 J PREPARATION OF TEST PIECES.......................................................................... 56 * O n 1 2 / 0 9 / 2 0 1 2 1 1 : 4 9 A M B L A C K O U T P O W E R P R O D U C T S L T D p u r c h a s e d a s i n g l e u s e l i c e n c e t o s t o r e t h i s d o c u m e n t o n a s i n g l e c o m p u t e r . B L A C K O U T P O W E R P R O D U C T S L T D m a y p r i n t a n d r e t a i n o n e c o p y o n l y . C o p y r i g h t S t a n d a r d s N e w Z e a l a n d * AS/NZS 1906.1:2007 4 FOREWORD The three types of retroreflective sheeting described in this Standard (Classes 1W, 1 and 2) are principally for use for road traffic signs. Careful consideration should be given as to whether sheeting which complies with this Standard is appropriate for other applications. For example, the Standard is not applicable to retroreflective sheeting for use on safety garments (see AS/NZS 1906.4), or for roadside delineators (see AS/NZS 1906.2). This Standard has been written solely as a performance specification for retroreflective sheeting and with the exception of some advice given in Appendix B, does not give guidance on its use. Included in this Standard are specifications applicable to micro-prismatic sheeting (Class 1W). This is a technologically advanced sheeting capable of high photometric performance. Users should, however, be aware of some notable differences in the characteristics of this sheeting when compared with sheeting using glass sphere technology. There can be quite significant changes in photometric performance with changes in rotation angle. This highlights the need to observe manufacturers’ orientation marks on the sheeting or other instructions as to the correct orientation of the sheeting in applications such as on traffic signs and to ensure that on any one sign, all pieces of sheeting are orientated in the same direction. As with other types of retroreflective sheeting, the performance of micro-prismatics is a compromise between high performance at narrow observation angles (i.e. the observer is a long distance from the sign) and acceptable residual performance at wider observation angles (i.e. the observer is close to the sign). This compromise can be altered in manufacture by small adjustments to the characteristics of the micro-prisms thus making it
Retroreflective materials and devices for road traffic control purposes Part 1: Retroreflective sheeting
A S / N Z S 1 9 0 6 . 1 : 2 0 0 7 C o p y r i g h t S t a n d a r d s N e w Z e a l a n d * AS/NZS 1906.1:2007
This Joint Australian/New Zealand Standard was prepared by Joint Technical Committee MS-049, Retroreflective Devices.
It was approved on behalf of the Council of Standards Australia on 19 January 2007 and on behalf of the Council of Standards New Zealand on 2 February 2007.
This Standard was published on 21 February 2007.
The following are represented on Committee MS-049: AUSTROADS Accident Compensation Corporation, New Zealand Australian Chamber of Commerce and Industry Australian Industry Group AWTA Textile Testing Land Transport Safety Authority, New Zealand National Association of Testing Authorities Australia Roadmarking Industry Association of Australia Road Safety Manufacturers Association, New Zealand The University of New South Wales Transit New Zealand Victorian College of Optometry Keeping Standards up-to-date Standards are living documents which reflect progress in science, technology and systems. To maintain their currency, all Standards are periodically reviewed, and new editions are published. Between editions, amendments may be issued. Standards may also be withdrawn. It is important that readers assure themselves they are using a current Standard, which should include any amendments which may have been published since the Standard was purchased. Detailed information about joint Australian/New Zealand Standards can be found by visiting the Standards Web Shop at www.standards.com.au or Standards New Zealand web site at www.standards.co.nz and looking up the relevant Standard in the on-line catalogue. Alternatively, both organizations publish an annual printed Catalogue with full details of all current Standards. For more frequent listings or notification of revisions, amendments and withdrawals, Standards Australia and Standards New Zealand offer a number of update options. For information about these services, users should contact their respective national Standards organization. We also welcome suggestions for improvement in our Standards, and especially encourage readers to notify us immediately of any apparent inaccuracies or ambiguities. Please address your comments to the Chief Executive of either Standards Australia or Standards New Zealand at the address shown on the back cover. This Standard was issued in draft form for comment as DR 05585. * O n 1 2 / 0 9 / 2 0 1 2 1 1 : 4 9 A M B L A C K O U T P O W E R P R O D U C T S L T D p u r c h a s e d a s i n g l e u s e l i c e n c e t o s t o r e t h i s d o c u m e n t o n a s i n g l e c o m p u t e r . B L A C K O U T P O W E R P R O D U C T S L T D m a y p r i n t a n d r e t a i n o n e c o p y o n l y . C o p y r i g h t S t a n d a r d s N e w Z e a l a n d * Single User PDF Download Terms & Conditions You have downloaded material which is subject to strict conditions of use. Copyright in this material is owned by Standards New Zealand. Please read these terms and conditions carefully, as in addition to the usual range of civil remedies available to Standards New Zealand for infringement of copyright, under New Zealand law every person who infringes copyright may be liable to a fine not exceeding $50,000 or to imprisonment for a term not to exceed three months. You have purchased a single-user licence to store this non-reviseable Adobe Acrobat PDF file on your personal computer. You may print out and retain ONE printed copy only. Standards New Zealand retains title and ownership of the copyright in this PDF file and the corresponding permitted printed copy at all times. Under this license use of both the PDF file and the single permitted printed copy of this PDF file you may make are restricted to you. Under no circumstances are you permitted to sell, transfer or copy this PDF file, the one permitted printed copy of this PDF file, or any part of either of them. You undertake that you will not modify, adapt, translate, reverse engineer, decompile, disassemble or create derivative works based on any of the downloaded PDF file, nor will you merge it with any other software or document, even for internal use within your organization. Under no circumstances may this PDF file be placed on a network of any sort without the express permission of Standards New Zealand. You are solely responsible for the selection of this PDF file and any advice or recommendation given by Standards New Zealand or its employees or agents about any aspect of this PDF file is intended for guidance only and is followed or acted upon entirely at your own risk. Standards New Zealand is not aware of any inherent risk of viruses in this PDF file at the time that it is downloaded. Standards New Zealand has exercised due diligence to ensure, so far as practicable, that this file does not contain such viruses. No warranty of any form is given by Standards New Zealand or by any party associated with Standards New Zealand with regard to this PDF file, and you accept and acknowledge that Standards New Zealand will not be liable in any way to you or any to other person in respect of any loss or damage, however caused which may be suffered or incurred or which may arise directly or indirectly through any use of this PDF file. Regardless of where you were when you downloaded this PDF file you accept and acknowledge that to the fullest extent possible you submit to New Zealand law with regard to this licence and to your use of this PDF file. * O n 1 2 / 0 9 / 2 0 1 2 1 1 : 4 9 A M B L A C K O U T P O W E R P R O D U C T S L T D p u r c h a s e d a s i n g l e u s e l i c e n c e t o s t o r e t h i s d o c u m e n t o n a s i n g l e c o m p u t e r . B L A C K O U T P O W E R P R O D U C T S L T D m a y p r i n t a n d r e t a i n o n e c o p y o n l y . C o p y r i g h t S t a n d a r d s N e w Z e a l a n d * NOTES * O n 1 2 / 0 9 / 2 0 1 2 1 1 : 4 9 A M B L A C K O U T P O W E R P R O D U C T S L T D p u r c h a s e d a s i n g l e u s e l i c e n c e t o s t o r e t h i s d o c u m e n t o n a s i n g l e c o m p u t e r . B L A C K O U T P O W E R P R O D U C T S L T D m a y p r i n t a n d r e t a i n o n e c o p y o n l y . C o p y r i g h t S t a n d a r d s N e w Z e a l a n d * AS/NZS 1906.1:2007 Australian/New Zealand Standard ™ Retroreflective materials and devices for road traffic control purposes Part 1: Retroreflective sheeting COPYRIGHT © Standards Australia/Standards New Zealand All rights are reserved. No part of this work may be reproduced or copied in any form or by any means, electronic or mechanical, including photocopying, without the written permission of the publisher. Jointly published by Standards Australia, GPO Box 476, Sydney, NSW 2001 and Standards New Zealand, Private Bag 2439, Wellington 6020 ISBN 0 7337 8050 4 Originated in Australia as SAA Int. 354-1955. Previous edition AS/NZS 1906.1:1993. Second edition 2007. * O n 1 2 / 0 9 / 2 0 1 2 1 1 : 4 9 A M B L A C K O U T P O W E R P R O D U C T S L T D p u r c h a s e d a s i n g l e u s e l i c e n c e t o s t o r e t h i s d o c u m e n t o n a s i n g l e c o m p u t e r . B L A C K O U T P O W E R P R O D U C T S L T D m a y p r i n t a n d r e t a i n o n e c o p y o n l y . C o p y r i g h t S t a n d a r d s N e w Z e a l a n d * AS/NZS 1906.1:2007 2 PREFACE This Standard was prepared by the Joint Australia/New Zealand Committee MS-049, Retroreflective Devices and supersedes AS/NZS 1906.1:1993, Retroreflective materials and devices for road traffic control purposes, Part 1: Retroreflective materials. It is one of a series of Standards on retroreflective devices as follows: AS/NZS 1906 Retroreflective materials and devices for road traffic control purposes 1906.1 Part 1: Retroreflective sheeting (this Standard) 1906.2 Part 2: Retroreflective devices (non-pavement application) 1906.4 Part 4: High visibility materials for safety garments AS 1906 Retroreflective materials and devices for road traffic control purposes 1906.3 Part 3: Raised pavement markers (retroreflective and non-retroreflective) The objective of this Standard is to provide road authorities, manufacturers and testing authorities with a uniform supply specification for retroreflective sheeting. The following are the principal changes and additions to this edition: (a) Introduction of Class 1W microprismatic retroreflective sheeting. (b) Introduction of retroreflective sheeting specifically designed for motor vehicle number plates. (c) CIL and colour specification and measurement for fluorescent sheeting. (d) Specification of durability test exposures in terms of radiant energy received rather than by exposure time. (e) Revised test for performance under simulated rainfall conditions. (f) New informative appendix on selection and use of sheeting. The terms ‘normative’ and ‘informative’ have been used in this Standard to define the application of the appendix to which they apply. A ‘normative’ appendix is an integral part of a Standard, whereas an ‘informative’ appendix is only for information and guidance. * O n 1 2 / 0 9 / 2 0 1 2 1 1 : 4 9 A M B L A C K O U T P O W E R P R O D U C T S L T D p u r c h a s e d a s i n g l e u s e l i c e n c e t o s t o r e t h i s d o c u m e n t o n a s i n g l e c o m p u t e r . B L A C K O U T P O W E R P R O D U C T S L T D m a y p r i n t a n d r e t a i n o n e c o p y o n l y . C o p y r i g h t S t a n d a r d s N e w Z e a l a n d * 3 AS/NZS 1906.1:2007 CONTENTS Page FOREWORD.............................................................................................................................. 4 SECTION 1 SCOPE AND GENERAL 1.1 SCOPE ........................................................................................................................ 5 1.2 REFERENCED DOCUMENTS .................................................................................. 5 1.3 DESCRIPTION ........................................................................................................... 5 1.4 DEFINITIONS ............................................................................................................ 6 1.5 CLASSIFICATION..................................................................................................... 8 SECTION 2 REQUIREMENTS FOR SHEETINGS OTHER THAN FOR NUMBER PLATES 2.1 PHOTOMETRIC PROPERTIES................................................................................. 9 2.2 COLOUR..................................................................................................................... 9 2.3 RAINFALL PERFORMANCE.................................................................................. 16 2.4 PHYSICAL PROPERTIES ....................................................................................... 16 2.5 ADHESIVE............................................................................................................... 17 2.6 DURABILITY........................................................................................................... 18 2.7 COLOUR-PROCESSING PROPERTIES.................................................................. 19 2.8 PACKAGING............................................................................................................ 20 2.9 SHELF LIFE ............................................................................................................. 20 2.10 MARKING................................................................................................................ 20 SECTION 3 SHEETINGS FOR MOTOR VEHICLE NUMBER PLATES-CLASSES NP AND NP(EMB) 3.1 PHOTOMETRIC PROPERTIES............................................................................... 21 3.2 COLOUR................................................................................................................... 22 3.3 RAINFALL PERFORMANCE.................................................................................. 22 3.4 PHYSICAL PROPERTIES........................................................................................ 23 3.5 ADHESIVE............................................................................................................... 23 3.6 DURABILITY........................................................................................................... 23 3.7 COLOUR-PROCESSING PROPERTIES.................................................................. 23 3.8 PACKAGING............................................................................................................ 24 3.9 SHELF LIFE ............................................................................................................. 24 3.10 MARKING................................................................................................................ 24 APPENDICES A PHOTOMETRIC PROPERTIES TEST..................................................................... 25 B SELECTION AND USE OF RETROREFLECTIVE SHEETING............................. 29 C COLOUR AND LUMINANCE FACTOR TESTS-FLUORESCENT AND NON- FLUORESCENT SHEETING................................................................................... 33 D CIE CHROMATICITY LIMITS (COLOUR SPACES) FOR COLOUR DESIGNATION ....................................................................................................... 36 E PHOTOMETRIC PERFORMANCE TEST UNDER SIMULATED RAIN CONDITIONS ................................................................................................ 43 F PHYSICAL PROPERTIES TEST ............................................................................. 46 G SOLVENT RESISTANCE TEST.............................................................................. 50 H ADHESIVE PROPERTIES TESTS........................................................................... 51 I DURABILITY TESTS .............................................................................................. 53 J PREPARATION OF TEST PIECES.......................................................................... 56 * O n 1 2 / 0 9 / 2 0 1 2 1 1 : 4 9 A M B L A C K O U T P O W E R P R O D U C T S L T D p u r c h a s e d a s i n g l e u s e l i c e n c e t o s t o r e t h i s d o c u m e n t o n a s i n g l e c o m p u t e r . B L A C K O U T P O W E R P R O D U C T S L T D m a y p r i n t a n d r e t a i n o n e c o p y o n l y . C o p y r i g h t S t a n d a r d s N e w Z e a l a n d * AS/NZS 1906.1:2007 4 FOREWORD The three types of retroreflective sheeting described in this Standard (Classes 1W, 1 and 2) are principally for use for road traffic signs. Careful consideration should be given as to whether sheeting which complies with this Standard is appropriate for other applications. For example, the Standard is not applicable to retroreflective sheeting for use on safety garments (see AS/NZS 1906.4), or for roadside delineators (see AS/NZS 1906.2). This Standard has been written solely as a performance specification for retroreflective sheeting and with the exception of some advice given in Appendix B, does not give guidance on its use. Included in this Standard are specifications applicable to micro-prismatic sheeting (Class 1W). This is a technologically advanced sheeting capable of high photometric performance. Users should, however, be aware of some notable differences in the characteristics of this sheeting when compared with sheeting using glass sphere technology. There can be quite significant changes in photometric performance with changes in rotation angle. This highlights the need to observe manufacturers’ orientation marks on the sheeting or other instructions as to the correct orientation of the sheeting in applications such as on traffic signs and to ensure that on any one sign, all pieces of sheeting are orientated in the same direction. As with other types of retroreflective sheeting, the performance of micro-prismatics is a compromise between high performance at narrow observation angles (i.e. the observer is a long distance from the sign) and acceptable residual performance at wider observation angles (i.e. the observer is close to the sign). This compromise can be altered in manufacture by small adjustments to the characteristics of the micro-prisms thus making it