AS 5156-2010

1 - AS 5156-2010 ELECTRONIC SPEED LIMIT SIGNS
4 - PREFACE
5 - CONTENTS
6 - SECTION 1 SCOPE AND GENERAL
6 - 1.1 SCOPE
6 - 1.2 APPLICATION
6 - 1.3 REFERENCED DOCUMENTS
7 - 1.4 DEFINITIONS
7 - 1.4.1 General
8 - 1.4.2 Definitions
10 - SECTION 2 DISPLAY AND OPTICAL REQUIREMENTS
10 - 2.1 DISPLAY REQUIREMENTS
10 - 2.1.1 General
14 - 2.1.2 Pixel arrangement
16 - 2.1.3 Pixel/LED
17 - 2.2 OPTICAL REQUIREMENTS
17 - 2.2.1 Luminance and luminance ratio
17 - 2.2.2 Luminous intensity uniformity
17 - 2.2.3 Colours
19 - SECTION 3 OPERATION AND CONTROL
19 - 3.1 GENERAL
19 - 3.1.1 Host control
19 - 3.1.2 Display activation
19 - 3.1.3 Testing and verification
20 - 3.2 LOCAL MANUAL CONTROL
20 - 3.2.1 Product Host Control System
20 - 3.2.2 Facility switch
20 - 3.3 REMOTE CONTROL
21 - 3.4 PROGRAMMING
21 - 3.5 COMMUNICATIONS PROTOCOL
21 - 3.6 MONITORING, FAULT LOGGING AND REPORTING
22 - 3.7 FALL-BACK OPERATION
22 - 3.8 SOFTWARE DEVELOPMENT
23 - 3.9 OPERATION AND MAINTENANCE MANUAL
24 - SECTION 4 GENERAL DESIGN AND ARRANGEMENT
24 - 4.1 MECHANICAL REQUIREMENTS
24 - 4.1.1 General
24 - 4.1.2 Sign enclosure
25 - 4.1.3 Sign mounting facilities
25 - 4.1.4 Control housing
27 - 4.1.5 Facility switch
28 - 4.2 ELECTRICAL REQUIREMENTS FOR MAINS OPERATED SIGNS
28 - 4.2.1 Compliance with wiring Standards
28 - 4.2.2 Operating voltage
28 - 4.2.3 Battery backup
28 - 4.2.4 Surge protection
28 - 4.3 DESIGN LIFE
28 - 4.4 SOLAR POWER
29 - 4.5 COMMUNICATIONS EQUIPMENT
29 - 4.6 REAL-TIME CLOCK
29 - 4.7 MARKINGS AND LABELS
30 - SECTION 5 ENVIRONMENTAL REQUIREMENTS
30 - 5.1 TEMPERATURE AND HUMIDITY
30 - 5.2 ENCLOSURE PROTECTION
30 - 5.3 WIND LOADING
30 - 5.4 SHOCK PROTECTION
30 - 5.4.1 Shock
30 - 5.4.2 Vibration
31 - 5.5 ELECTROMAGNETIC COMPATIBILITY (EMC)
31 - 5.5.1 Immunity
31 - 5.5.2 Electromagnetic emissions
32 - APPENDIX A - PHOTOMETRIC TEST PROCEDURES
32 - A1 GENERAL
32 - A2 TEST PROCEDURES FOR LUMINANCE MEASUREMENT
32 - A2.1 General
33 - A2.2 Luminance measurement of annulus segment
33 - A2.3 Luminance measurement of the numerals
34 - A2.4 Normalization of results
34 - A3 TEST PROCEDURES FOR LUMINANCE RATIO MEASUREMENT
34 - A3.1 Solar stimulation
35 - A3.2 Luminance ratio of annulus
36 - A3.3 Luminance ratio of measurement of the legend
37 - A3.4 Luminance ratio of conspicuity device
38 - A4 TEST PROCEDURES FOR LUMINOUS INTENSITY HALF-ANGLE MEASUREMENT
38 - A4.1 Luminous intensity half-angle of the annulus
38 - A4.2 Luminous intensity half-angle of the numeral display
39 - A5 TEST PROCEDURES FOR LUMINOUS INTENSITY UNIFORMITY
39 - A6 TEST PROCEDURES FOR CONSPICUITY DEVICES
39 - A6.1 Luminous intensity of conspicuity device
39 - A6.2 Luminous intensity of half-angle of conspicuity device
40 - A7 TEST PROCEDURES FOR PHOTOSENSORS
40 - A7.1 General
40 - A7.2 Test procedures for measurement of photosensors
40 - A8 COLORIMETRIC TEST PROCEDURES
42 - APPENDIX B - FURTHER REQUIREMENTS FOR MATRIX SIGNS
42 - B1 GENERAL
42 - B2 DISPLAY REQUIREMENTS
42 - B2.1 Display changes
43 - B2.2 Display changes due to facility switch operation
43 - B2.3 Display changes due to external switch inputs
44 - B2.4 Graphics requirements
44 - B3 PROGRAMMING
45 - B4 FRAME, MESSAGE NUMBERING AND DISPLAY IMAGES
45 - B4.1 Graphics requirements
45 - B4.2 Message numbering for speed displays
45 - B4.3 Frame numbering for other displays
47 - B4.4 Message numbering for other displays
48 - B4.5 Standard bitmap display images
54 - B4.6 Bitmap definitions for other displays
68 - APPENDIX C - SIGN CLEARANCES AND ACCESS
68 - C1 SIGN CLEARANCES
68 - C2 SIGN ACCESS
69 - APPENDIX D - WIRELESS COMMUNICATIONS

This Standard covers electronic speed limit signs composed of discrete light-emitting elements intended to be permanently mounted or portable, adjacent to or over roadways, for the primary purpose of communicating speed restrictions to approaching road users. It specifies requirements for the design, construction, performance and certain aspects of the installation of electronic speed limit signs, including their associated control systems. In order to allow for future developments in technology and sign design, this Standard defines performance requirements that are not dependent on technology and whose optical performance may be determined using a test module.

First published as AS 5156-2010.