AS 2144-1995

1 - AS 2144-1995 TRAFFIC SIGNAL LANTERNS
4 - PREFACE
6 - CONTENTS
8 - SECTION 1 SCOPE AND GENERAL
8 - 1.1 SCOPE
8 - 1.2 REFERENCED DOCUMENTS
8 - 1.3 DEFINITIONS
8 - 1.3.1 Aspect
8 - 1.3.2 Beam axis (for vehicular lanterns)
8 - 1.3.3 Bicycle lantern
8 - 1.3.4 Chromaticity
8 - 1.3.5 Chromaticity coordinates
8 - 1.3.6 Extended range lantern
9 - 1.3.7 General purpose lantern
9 - 1.3.8 Geometric axis
9 - 1.3.9 Intrinsic sun-phantom
9 - 1. 3.10 Lantern face
9 - 1.3.11 Lens
9 - 1.3.12 Luminance
9 - 1.3.13 Luminous flux
9 - 1.3.14 Luminous intensity
9 - 1. 3.15 Optical system
9 - 1.3.16 Pedestrian lantern
9 - 1.3.17 Signal
9 - 1.3.18 Sun-phantom
9 - 1.3.19 Target board
9 - 1.3.20 Traffic signal lantern
10 - 1.3.21 Vehicular lantern
10 - 1.3.22 Visor (cowl)
10 - 1.4 MARKING
11 - SECTION 2 SIGNAL COLOURS AND DISPLAYS
11 - 2.1 SIGNAL COLOURS
11 - 2.2 SIGNAL DISPLAYS
13 - SECTION 3 PHOTOMETRIC PERFORMANCE
13 - 3.1 AVOIDANCE OF REFLECTIONS
13 - 3.2 VEHICULAR LANTERNS
13 - 3.2.1 Intensity distribution of lanterns which exhibit a circular display
15 - 3.2.2 Luminance of lanterns which exhibit a symbolic display
16 - 3.2.3 Control of sun-phantom
16 - 3.3 PEDESTRIAN AND BICYCLE LANTERNS
16 - 3.3.1 Form and appearance of signal
17 - 3.3.2 Luminance of the display
18 - SECTION 4 MECHANICAL AND PHYSICAL FEATURES AND PROPERTIES
18 - 4.1 GENERAL ARRANGEMENT
18 - 4.1.1 Size and arrangement of aspects
18 - 4.1.2 Mounting facilities
18 - 4.1.3 Access to optical system
18 - 4.1.4 Provision for adjustment
18 - 4.1.5 Controlling dimensions for vehicular lanterns
21 - 4.2 MASS OF LANTERN ASPECTS
21 - 4.3 SEALING OF OPTICAL SYSTEM
21 - 4.4 MATERIALS AND METHODS OF CONSTRUCTION
21 - 4.5 SURFACE FINISH
22 - 4.6 WEATHER RESISTANCE
22 - 4.6.1 Drainage facilities
22 - 4.6.2 Required protection
22 - 4.7 OPERATING TEMPERATURES
23 - SECTION 5 ELECTRICAL REQUIREMENTS
23 - 5.1 COMPLIANCE WITH AS 3100
23 - 5.2 SUPPLY VOLTAGE
23 - 5.3 PROVISION FOR CONNECTION TO THE SUPPLY
23 - 5.3.1 Supply conductors
24 - 5.3.2 Terminals for the connection of supply conductors
24 - 5.4 BUILT-IN TRANSFORMERS
25 - SECTION 6 OPTICAL SYSTEM COMPONENTS AND ANCILLARY DEVICES
25 - 6.1 ASSEMBLY OF OPTICAL SYSTEM
25 - 6.2 PROPERTIES OF OPTICAL COMPONENTS
25 - 6.2.1 Material and construction
25 - 6.2.2 Colour stability
25 - 6.2.3 Thermal characteristics
25 - 6.3 REFLECTORS
25 - 6.3.1 General design and arrangement
25 - 6.3.2 Silvered glass reflectors
26 - 6.3.3 Reflectors other than silvered glass
26 - 6.4 LAMPHOLDERS
26 - 6.4.1 Material properties
26 - 6.4.2 Lampholders for mains voltage operation
26 - 6.4.3 Lampholders for 10 V operation
26 - 6.4.4 Mounting
26 - 6.5 LAMPS
27 - 6.6 SYMBOLIC DISPLAYS
27 - 6.7 VISORS AND LOUVRES
27 - 6.8 TARGET BOARDS (FOR VEHICULAR LANTERNS)
28 - 6.9 ANTI-SUN-PHANTOM DEVICES
36 - APPENDIX A - INFORMATION TO BE SUPPLIED WITH ENQUIRY OR ORDER
37 - APPENDIX B - LIST OF REFERENCED DOCUMENTS
39 - APPENDIX C - REFERENCES
40 - APPENDIX D - TEST CONDITIONS AND PROCEDURES FOR PHOTOMETRIC AND COLORIMETRIC MEASUREMENTS
40 - D1 GENERAL TEST CONDITIONS
41 - D2 CALIBRATION AND MEASUREMENT CONDITIONS
41 - D3 MEASUREMENT PROCEDURES
45 - D4 CORRECTION OF MEASUREMENTS
46 - APPENDIX E - RECOMMENDED DIMENSIONS FOR VISORS AND TARGET BOARDS
46 - E1 SCOPE
46 - E2 DIMENSIONS FOR VISORS
46 - E3 DIMENSIONS FOR TARGET BOARDS
51 - APPENDIX F - PROVISIONAL RECOMMENDATIONS FOR LED PEDESTRIAN SIGNAL DISPLAYS
51 - F1 GENERAL
51 - F2 FORM AND APPEARANCE OF DISPLAY
55 - APPENDIX G - RECOMMENDED TEST PROCEDURE FOR DETERMINING THE TEMPERATURE RISE OF COMPONENTS
55 - G1 INTRODUCTION
55 - G2 TEST ENCLOSURE
55 - G3 ARRANGEMENT OF LANTERN
55 - G4 OPERATING CONDITIONS
56 - G5 TEMPERATURE MEASUREMENT
56 - G6 REPORTING OF RESULTS

Specifies requirements for the design, construction and performance of traffic signal lanterns that are intended to control the movement of vehicles, including bicycles, and pedestrians. Covers the colour and photometric performance of the signal emitted, and the mechanical, electrical and physical features and properties of the lanterns and ancillary equipment.

This Standard specifies requirements for the design, construction and performance of traffic signal lanterns that are intended to control the movement of vehicles, including bicycles, and pedestrians. It does not apply to the control equipment that may be necessary for the functioning of the lanterns.For vehicular lanterns, two basic levels of performance are specified, namely, for general purpose lanterns and for extended range lanterns. Requirements are also specified for a variety of special purpose lanterns.NOTES:1 Requirements for the use of traffic signal lanterns in the control of vehicular and pedestrian traffic are set out in the AS 1742 series.2 See Appendix A for the information which should be supplied with an enquiry or order for traffic signal lanterns to this Standard.

First published as AS E32-1947.
Revised and redesignated AS 2144-1978.
Second edition 1989.
Third edition 1995.