AS 2578.1-1983

1 - AS 2578, PART 1-1983 TRAFFIC SIGNAL CONTROLLERS - PHYSICAL AND ELECTRICAL COMPATIBILITY
4 - PREFACE
4 - CONTENTS
5 - SECTION 1. SCOPE AND GENERAL
5 - 1.1 SCOPE.
5 - 1.2 REFERENCED DOCUMENTS.
5 - 1.3 DEFINITIONS.
5 - 1.3.1 Traffic signal controller
5 - 1.3.2 Ground-mounted controller
5 - 1.3.3 Post-mounted controller
5 - 1.3.4 Coordination facilities
5 - 1.3.5 Facility switch
5 - 1.3.6 Flashing yellow facility
5 - 1.3.7 Pedestrian push-button assembly
5 - 1.3.8 Active output
5 - 1.3.9 Passive output
5 - 1.3.10 Signal group
5 - 1.3.11 Housing (cabinet)
6 - 1.3.12 Independent detector*
6 - 1.3.13 Rack-mounted detector*
6 - 1.4 ENVIRONMENTAL CONDITIONS.
6 - 1.5 EXPANSION CAPABILITY.
8 - SECTION 2. MECHANICAL AND PHYSICAL REQUIREMENTS
8 - 2.1 REQUIREMENTS COMMON TO ALL CONTROLLERS.
8 - 2.1.1 Design and Construction of Housing.
8 - 2.1.2 Access to Internal Equipment.
8 - 2.1.3 Danger Sign.
8 - 2.1.4 Storage Pocket.
8 - 2.1.5 Weather Resistance.
8 - 2.1.6 Ventilation.
8 - 2.1.7 Exterior Finish.
9 - 2.1.8 Maximum Acoustic Noise.
9 - 2.1.9 Provision for Connection to Telecom Lines.
9 - 2.2 REQUIREMENTS FORGROUND-MOUNTED CONTROLLERS
9 - 2.2.1 External Dimensions of Housing.
9 - 2.2.2 Mounting Facilities.
10 - 2.2.3 Arrangement of Internal Equipment.
10 - 2.2.4 Provision for the Connection of External Cables.
10 - 2.3 REQUIREMENTS FOR POST-MOUNTED CONTROLLERS.
10 - 2.3.1 External Dimensions of Housing.
10 - 2.3.2 Mounting Facilities.
10 - 2.3.3 Space for Detectors.
10 - 2.3.4 Provision for the Connection of External Cables.
12 - SECTION 3. GENERAL ELECTRICAL REQUIREMENTS
12 - 3.1 ELECTRICAL SAFETY.
12 - 3.2 RADIO FREQUENCY INTERFERENCE.
12 - 3.3 PROTECTION AGAINST ELECTRICAL TRANSIENTS AND OVERVOLTAGE.
12 - 3.4 SWITCHBOARD.
12 - 3.5 TERMINALS FOR THE CONNECTION OF EXTERNAL WIRING.
12 - 3.5.1 Required Number and Size.
12 - 3.5.2 Design and Construction.
12 - 3.5.3 Arrangement of Terminals.
12 - 3.6 FACILITY SWITCH.
16 - SECTION 4. REQUIREMENTS FOR INTERFACING WITH BEXTERNAL EQUIPMENT
16 - 4.1 APPLICATION OF SECTION.
16 - 4.2 REQUIREMENTS FOR INPUTS.
16 - 4.2.1 General Characteristics.
16 - 4.2.2 Inputs from Vehicle Loop Detectors.
16 - 4.2.3 Inputs from Pedestrian Push-button Assemblies.
16 - 4.3 REQUIREMENTS FOR OUTPUTS.
16 - 4.3.1 Passive Outputs.
16 - 4.3.2 Active Outputs.
18 - APPENDIX A - INFORMATION TO BE SUPPLIED WITH ENQUIRY OR ORDER

Specifies requirements for those characteristics of traffic signal controllers which interact with other equipment associated with road traffic signal installations, with the objective of ensuring that, as far as practicable, controllers from different manufacturers will be physically interchangeable, and that the functioning of the controller will be independent of the characteristics of externally connected equipment. It also specifies certain general requirements for the design and construction of controllers.

This standard specifies requirements for those characteristics of traffic signal controllers which interact with other equipment associated with road traffic signal installations, with the objective of ensuring that, as far as practicable-(a) controllers from different manufacturers will be physically interchangeable; and (b) the functioning of the controller will be independent of the characteristics of externally connected equipment.It also specifies certain general requirements for the design and construction of traffic signal controllers.NOTE: The requirements of this standard may not ensure total physical and electrical interchangcability, but should enable a replacement controller to be installed with a minimum of alteration.