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1、 AS 4852.22009 Australian Standard Variable message signs Part 2: Portable signs AS 4852.22009 This Australian Standard was prepared by Committee LG-006, Road Traffic Signals. It was approved on behalf of the Council of Standards Australia on 10 March 2009. This Standard was published on 14 April 20
2、09. The following are represented on Committee LG-006: ARRB Group Australian Industry Group AUSTROADS Brisbane City Council CIE Australia Inc. Department for Transport, Energy and Infrastructure, South Australia Hire and Rental Industry Association of Australia IES: The Lighting Society Lighting Cou
3、ncil of Australia Main Roads Department, Queensland Roads and Traffic Authority of New South Wales VicRoads This Standard was issued in draft form for comment as DR 07370. Standards Australia wishes to acknowledge the participation of the expert individuals that contributed to the development of thi
4、s Standard through their representation on the Committee and through the public comment period. Keeping Standards up-to-date Keeping Standards up-to-date Australian Standards are living documents that reflect progress in science, technology and systems. To maintain their currency, all Standards are
5、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 Standards may also be withdrawn.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 that may have been published since the Standard wa
6、s published. Detailed information about Australian Standards, drafts, amendments and new projects can be found by visiting www.standards.org.auwww.standards.org.au Standards Australia welcomes suggestions for improvements, and encourages readers to notify us immediately of any apparent inaccuracies
7、or ambiguities. Contact us via email at mailstandards.org.aumailstandards.org.au, or write to Standards Australia, GPO Box 476, Sydney, NSW 2001. The Standard is downloaded from Standard Sharing AS 4852.22009 Australian Standard Variable message signs Part 2: Portable signs First published as AS 48
8、52.22009. COPYRIGHT Standards Australia 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. Published by Standards Australia GPO Box 476, Sydney, NSW
9、2001, Australia ISBN 0 7337 9121 2 AS 4852.22009 2 PREFACE This Standard was prepared by the Standards Australia Committee LG-006, Road Traffic Signals. This Standard forms Part 2 of the AS 4852 series, which covers requirements for the construction and performance of electrically powered variable m
10、essage signs based on light-emitting diode technologies in a matrix configuration that are intended to be used for road traffic management. These signs are expected to provide real-time information on the oncoming road in the transportation network. The objective of this Standard is to specify the r
11、equirements for the design and performance of variable message signs. The series consists of the following Standards: AS 4852 Variable message signs 4852.1 Part 1: Fixed signs 4852.2 Part 2: Portable signs (this Standard) The use of any signs, including variable message signs, for road traffic manag
12、ement is subject to regulation by traffic control authorities. Guidance on and requirements relating to their use are provided in the series of Standards AS 1742, Manual of uniform traffic control devices. Statements expressed in mandatory terms in notes (footnotes) to tables (figures) are deemed to
13、 be requirements of this Standard. 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. The Stan
14、dard is downloaded from Standard Sharing 3 AS 4852.22009 CONTENTS Page SECTION 1 SCOPE AND GENERAL 1.1 SCOPE 4 1.2 APPLICATION.4 1.3 REFERENCED DOCUMENTS 4 1.4 DEFINITIONS 5 SECTION 2 GENERAL DESIGN AND ARRANGEMENT 2.1 MECHANICAL REQUIREMENTS8 2.2 ELECTRICAL REQUIREMENTS9 2.3 SECURITY 9 2.4 MARKING
15、S AND LABELS.9 SECTION 3 DISPLAY AND OPTICAL REQUIREMENTS 3.1 DISPLAY REQUIREMENTS. 11 3.2 OPTICAL REQUIREMENTS. 13 SECTION 4 OPERATION AND CONTROL 4.1 GENERAL 16 4.2 LOCAL CONTROL 17 4.3 REMOTE CONTROL . 17 4.4 PROGRAMMING. 17 4.5 COMMUNICATIONS PROTOCOL. 18 4.6 MONITORING, FAULT LOGGING AND REPORT
16、ING 18 4.7 FALL-BACK SYSTEM 19 4.8 SOFTWARE DEVELOPMENT 20 4.9 OPERATIONS AND MAINTENANCE MANUAL 20 SECTION 5 ENVIRONMENTAL REQUIREMENTS 5.1 TEMPERATURE AND HUMIDITY 21 5.2 ENCLOSURE PROTECTION. 21 5.3 WIND LOADING . 21 5.4 ELECTROMAGNETIC COMPATIBILITY (EMC) . 21 APPENDICES A PHOTOMETRIC TEST PROCE
17、DURES 22 B COLORIMETRIC TEST PROCEDURES. 26 C WIRELESS COMMUNICATION. 27 AS 4852.22009 4 Standards Australia www.standards.org.au STANDARDS AUSTRALIA Australian Standard Variable message signs Part 2: Portable signs S E C T I O N 1 S C O P E A N D G E N E R A L 1.1 SCOPE This Standard covers electri
18、cally powered, on-road, variable message signs used for traffic management and/or driver information applications. Part 1 of the Standard covers Fixed Signs, where the display is mounted in a permanent position above or adjacent to the roadway. Part 2 of the Standard covers Portable Signs, where the
19、 display is mounted and deployed on a re-locatable trailer. While this Standard is based on systems that use the commonly available emitter, LED (Light Emitting Diodes), as the display source, the general criteria relating to driver observation, sign functionality, and structural and operational int
20、egrity of the associated hardware are relevant for other forms of variable message signs. Relevant parts of this Standard can be applied to non-LED variable message signs. The Standard is not intended to exclude the use or development of alternative display sources. This Standard specifies the requi
21、rements for the design, construction, performance and certain aspects of the application of the aforesaid signs, including their associated control systems. The following types of message signs are not included within the scope of this Standard: (a) Destination signs on buses, trains etc. (b) Portab
22、le variable message signs intended to advertise products and services to road users. (c) Portable signs that are only capable of displaying either a single message or a blank face. Trailer-mounted speed advisory signs shall comply with the optical and environmental requirements set out in this Stand
23、ard. 1.2 APPLICATION It is intended that variable message signs complying with this Standard be used to provide traffic-related information to motorists, cyclists and pedestrians. This includes road safety messages and real-time traffic information relating to incidents, roadworks and travel times.
24、1.3 REFERENCED DOCUMENTS The following documents are referred to in this Standard: AS 1742 Manual of uniform traffic control devices 1743 Road signsSpecifications The Standard is downloaded from Standard Sharing 5 AS 4852.22009 www.standards.org.au Standards Australia 1744 Forms of letters and nume
25、rals for road signs (known as Standard alphabets for road signs) 4006 Software test documentation 4009 Software reviews and audits 4042 Software configuration management plans 4043 Software configuration management 60529 Degrees of protection provided by enclosures (IP Code) AS IEC 60300 Dependabili
26、ty management 60300.2 Part 2: Guidance for dependability programme management AS/NZS 1170 Structural design actions 1170.2 Part 2: Wind actions 3000 Wiring rules 4258 Software user documentation process 61000 Electromagnetic compatibility (EMC) 61000.6.1 Part 6.1: Generic standardsImmunity for resid
27、ential, commercial and light- industrial environments AS/NZS ISO 9001 Quality management systemsRequirements HB 90.9 Software developmentGuide to ISO 9001:2000 ISO/IEC 12207 Systems and software engineeringSoftware life cycle processes CIE 69 Methods of characterizing illuminance meters and luminanc
28、e meters: Performance, characteristics and specifications (E) 1.4 DEFINITIONS 1.4.1 General For the purpose of this Standard, the definitions below apply. 1.4.2 Quantities specific to the display 1.4.2.1 Character height The height of an upper case character in millimetres. 1.4.2.2 Character matrix
29、For any given font and character, the matrix of pixels required to display the character. 1.4.2.3 Character spacing The horizontal distance between the closest characters in the same word or numeral set, expressed in terms of the number of inactive pixels. 1.4.2.4 Display The section or sections of
30、any face of a sign comprising character matrices. AS 4852.22009 6 Standards Australia www.standards.org.au 1.4.2.5 Emitter The basic light-emitting component used. This can be a single LED, or a cluster of LEDs bound together and energized as a single component. 1.4.2.6 Equivalent area The equivalen
31、t area around an active pixel is the apparent visual area of the lit pixel. The width of the equivalent area is taken to be numerically equal to the centre-to-centre distance of any two adjacent pixels. See Figure 3.2. 1.4.2.7 Frame Any stable state displayed on a variable message sign (VMS) unit th
32、at is preceded by and followed by a change of state. It will typically consist of text, symbols, a combination of the two, or a blank display. 1.4.2.8 Height-to-width ratio The ratio of the height of the character matrix to its width. 1.4.2.9 Line spacing The vertical distance between lines of chara
33、cters, expressed in terms of the number of inactive pixels. 1.4.2.10 Luminance ratio (LR) The relationship between the luminance generated by the sign and the luminance due to reflected incident light. Specifically: LR = () b ba L LL where La = the measured luminance resulting from the sign with all
34、 pixels active (i.e. energized) under external illumination Lb = the measured luminance resulting from the sign with all pixels inactive (i.e. blanked) under external illumination. 1.4.2.11 Luminous intensity half-angle The luminous intensity half-angle of an emitter is the off-axis angle at which t
35、he output luminous intensity of the emitter is half that of the value measured on the reference axis (the mechanical axis) of the emitter. 1.4.2.12 Message A series of frames constituting a single message. 1.4.2.13 Pixel For any given font on any given sign, the smallest switched unit from which act
36、ive messages are created. It may consist of a single emitter or multiple emitters switched simultaneously. 1.4.2.14 Plan See the definition for schedule. 1.4.2.15 Product host control system A software program supplied by the sign manufacturer for remote and local control, configuration, monitoring,
37、 testing and diagnostics of the sign. The Standard is downloaded from Standard Sharing 7 AS 4852.22009 www.standards.org.au Standards Australia 1.4.2.16 Schedule A defined combination of messages complete with a start and stop time, including, if applicable, a cyclic repetition of one or more combi
38、nations. A schedule is also known as a plan. 1.4.2.17 Stroke-width For any given font (i.e. style and size of character), the width of a vertical stroke expressed as the width of the equivalent area of the lit pixel(s). See Figure 3.2. 1.4.2.18 Word spacing The distance between adjacent words, expre
39、ssed in terms of the number of inactive pixels. 1.4.3 Other relevant quantities 1.4.3.1 Border A surround to the sign face used for the following reasons: (a) To make a sign more conspicuous by increasing its size and isolating it from its background. (b) To make a sign more conspicuous by the colou
40、r of the border. (c) To reduce the effects of glare when the sun is low and behind the sign. 1.4.3.2 Variable message sign (VMS) A sign, including control equipment, that can display at least three messages, the transition between messages being caused by electrical means. For the purpose of this de
41、finition, an intentionally blank display constitutes a message. AS 4852.22009 8 Standards Australia www.standards.org.au S E C T I O N 2 G E N E R A L D E S I G N A N D A R R A N G E M E N T 2.1 MECHANICAL REQUIREMENTS 2.1.1 General arrangement Signs shall be supplied as a self-contained item of pla
42、nt, mounted on a trailer and complete with a power supply system (e.g. batteries, photovoltaic panel), control equipment and associated cables, ready for immediate use in the field. When raised in the normal operating position, the sign face shall be capable of rotation through 360 on the vertical a
43、xis with reference to the trailer orientation. Facilities shall be provided for the sign to be raised and locked in the operating position. NOTE: This procedure should be simple. For type A signs only, where the sign is of fixed alignment with respect to the trailer, 360 rotation may be achieved thr
44、ough the positioning of the trailer. With the sign raised in the normal operating position, the distance from the lower edge of the display panel to the ground immediately below shall be not less than 2 m. When being transported, the sign shall be either turned to within 10 of the direction of trave
45、l or tilted face down in an approximately horizontal position. In either case, provision shall be made for the sign to be secured. 2.1.2 Sign enclosure The sign housing shall incorporate the following: (a) A front viewing window of high impact strength, anti-glare, clear polycarbonate sheeting of 4.
46、5 mm minimum thickness. The size of the window area shall be such that, when the device is installed, the side and lower edges of every possible character matrix are fully visible at viewing angles of 45 and 30 respectively to an axis perpendicular to the display face. (b) A surrounding border of no
47、t less than 100 mm in width. (c) Lockable access door(s). These shall be hinged on the top to provide access to all internal components of the sign for both installation and maintenance purposes. When open, the door(s) shall be held in a secure position. (d) A sitting device to aid alignment of the
48、sign. 2.1.3 Controller enclosure A separate lockable enclosure shall be provided to house all the controls. The controller enclosure shall also provide a storage space for logbooks and operations and maintenance manuals. This compartment shall be readily accessible and secured with a lock. 2.1.4 Bat
49、tery storage enclosure A separate lockable enclosure shall be provided to house the power supply reservoir batteries. 2.1.5 Trailer The trailer shall comply with the applicable Australian Design Rules. The trailer-mounted sign unit shall be suitable for registration in accordance with the statutory requirements of the relevant State or Territory. The Standard is downloaded from Standard Sharing 9 AS 4852.22009 ww