AS 4191-1994 Portable traffic signal systems by SAIGlobalAPAC

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                                                                                                   Australian Standard®

                                                                 Portable traffic signal systems
                                                                                                                          AS 4191—1994
                                                                                           This Australian Standard was prepared by Committee LG/6, Road Traffic Signals. It
                                                                                           was approved on behalf of the Council of Standards Australia on 11 March 1994 and
                                                                                           published on 16 May 1994.




                                                                                           The following interests are represented on Committee LG/6:

                                                                                                Australian Chamber of Manufactures
                                                                                                Australian Electrical and Electronic Manufacturers Association
                                                                                                Australian Road Research Board
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                                                                                                AUSTROADS
                                                                                                Brisbane City Council
                                                                                                Department of Road Transport, S.A.
                                                                                                Department of Urban Services, A.C.T.
                                                                                                Metal Trades Industry Association of Australia
                                                                                                Roads and Traffic Authority, N.S.W.
                                                                                                Vic Roads

                                                                                           Additional interests participating in preparation of Standard:

                                                                                                Manufacturers of portable traffic signal systems




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                                                                                                      This Standard was issued in draft form for comment as DR 93202.
                                                                                                                                AS 4191—1994




                                                                                           Australian Standard®
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                                                                                           Portable traffic signal systems




                                                                                            First publi shed as AS 4191—1994.




                                                                                           PUBLISHED BY STANDARDS AUSTRALIA
                                                                                           (STANDARDS ASSOCIATION OF AUSTRALIA)
                                                                                           1 THE CRESCENT, HOMEBUSH, NSW 2140
                                                                                                                                    ISBN 0 7262 8868 3
                                                                                           AS 4191—1994                                                       2


                                                                                                                                                       PREFACE
                                                                                                This Standard was prepared by the Standards Australia Committee on Road Traffic Signals.
                                                                                                It is one of a number of Standards which set out requirements for the equipment associated
                                                                                                with traffic signal installations, namely:
                                                                                                AS
                                                                                                2144             Traffic signal lanterns
                                                                                                2339             Traffic signal posts and attachments
                                                                                                2353             Pedestrian push-button assemblies
                                                                                                2578             Traffic signal controllers
                                                                                                2578.1           Part 1: Physical and electrical compatibility
                                                                                                2703             Vehicle loop detector sensors
                                                                                                2979             Traffic signal mast arms
                                                                                                4113             Traffic signal lamps
                                                                                                4113.1           Part 1: Lamps for 240 V a.c. operation
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                                                                                                4113.2           Part 2: Lamps for a.c. operation at extra-low voltage
                                                                                                4191             Portable traffic signal systems (this Standard)
                                                                                                AS/NZS
                                                                                                4192             Illuminated flashing arrow signs
                                                                                                This Standard specifies requirements for the design, construction and performance of three-
                                                                                                colour portable signal systems for use where temporary control of vehicular traffic is
                                                                                                required, such as at road or bridge works. It provides for two main forms of control, viz.
                                                                                                shuttle control and plant-crossing control.
                                                                                                Attention is drawn to the fact that the use of portable traffic signals is subject to regulation
                                                                                                by traffic control authorities. Guidance on their use is provided in AS 1742.3, Manual of
                                                                                                uniform traffic control devices, Part 3: Traffic control devices for works on roads.
                                                                                                The term ‘informative’ has been used in this Standard to define the application of the
                                                                                                appendix to which it applies. An ‘informative’ appendix is only for information and guidance.




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                                                                                                                                                  3                                                      AS 4191—1994




                                                                                                                                           CONTENTS
                                                                                                                                                                                                           Page
                                                                                           SECTION 1 SCOPE AND GENERAL
                                                                                             1.1 SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
                                                                                             1.2 REFERENCED DOCUMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
                                                                                             1.3 DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
                                                                                             1.4 RADIO POWER AND FREQUENCY LICENSING REQUIREMENTS . . . . . 7
                                                                                             1.5 TRAILER-MOUNTED SYSTEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
                                                                                             1.6 SURFACE FINISHES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
                                                                                             1.7 INSTRUCTION MANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
                                                                                             1.8 MARKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
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                                                                                           SECTION 2 OPERATIONAL REQUIREMENTS
                                                                                             2.1 CONTROL TYPES . . . . . . . . . . . . . . . . . . . . . . . . . . .           ..    . .. .. ..   ..    ...      9
                                                                                             2.2 MODES OF OPERATION . . . . . . . . . . . . . . . . . . . . . .                ..    ... ... .    . .   . ..   . 9
                                                                                             2.3 START-UP SEQUENCE . . . . . . . . . . . . . . . . . . . . . . . .             . .   ... ... .    . .   . ..   . 9
                                                                                             2.4 START-UP INTERLOCKS . . . . . . . . . . . . . . . . . . . . . .               ..    ... ... .    . .   . ..   . 9
                                                                                             2.5 MANUAL OPERATION . . . . . . . . . . . . . . . . . . . . . . . .              . .   ... ... .    . .   . ..   . 9
                                                                                             2.6 FIXED-TIME OPERATION . . . . . . . . . . . . . . . . . . . . .                ..    .... ...     ..    .. .    10
                                                                                             2.7 VEHICLE-ACTUATED OPERATION . . . . . . . . . . . . . .                        ..    .......      ..    .. .    10
                                                                                             2.8 FLASHING YELLOW OPERATION . . . . . . . . . . . . . . .                       ..    .......      ..    . ..    11
                                                                                             2.9 SEQUENCE AND TIMING OF SIGNAL DISPLAYS . . .                                  ..    .. .. .. .   ..    ...     12
                                                                                             2.10 MONITORING AND CONTROL . . . . . . . . . . . . . . . . .                     ..    .......      . .   .. .    12

                                                                                           SECTION 3 FUNCTIONAL REQUIREMENTS
                                                                                             3.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    ......           13
                                                                                             3.2 OPERATOR CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .              .. .. ..         13
                                                                                             3.3 VISUAL MONITORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .            . .. .. .        13
                                                                                             3.4 LAMP MONITORING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .            . .. .. .        14
                                                                                             3.5 ACCESS TO CONTROL AND MONITORING FUNCTIONS . . . . .                                         .. .. ..         14
                                                                                             3.6 REMOTE MANUAL CONTROL FACILITIES . . . . . . . . . . . . . . . .                             ......           14

                                                                                           SECTION 4 LANTERNS
                                                                                             4.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . .       .. ... .. .. ..      .. ... ......            15
                                                                                             4.2 LANTERN TYPE AND PERFORMANCE . . .                              .. .. .. .. ...      ...........              15
                                                                                             4.3 AIMING AND ADJUSTMENT . . . . . . . . . . .                     ... ........         ..... ... .. .           15
                                                                                             4.4 TARGET BOARDS . . . . . . . . . . . . . . . . . . .             ........ ...         .. .. .. .. ...          15
                                                                                             4.5 VISORS . . . . . . . . . . . . . . . . . . . . . . . . . . .    ... .. .. .. ..      ... ........             15

                                                                                           SECTION 5 VEHICLE DETECTORS
                                                                                             5.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .         16
                                                                                             5.2 DETECTION ZONE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .              16
                                                                                             5.3 DETECTION SPEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .               16
                                                                                             5.4 PRESENCE DETECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                  16
                                                                                             5.5 AIMING AND ADJUSTMENT (FOR POST-MOUNTED DETECTORS) . . . .                                                    16
                                                                                           AS 4191—1994                                              4


                                                                                                                                                                                                                 Page
                                                                                                SECTION 6 POWER SUPPLY
                                                                                                  6.1 GENERAL . . . . . . . . . . . . . . . . . . .      ..   ..   ....    ...   .. ..   ..   ..   ... .....     .   17
                                                                                                  6.2 LOW-VOLTAGE CUT-OUT . . . . . . .                  ..   ..   ... .   ...   ....    ..   ..   . ... .. ..   .   17
                                                                                                  6.3 MOTOR-DRIVEN GENERATOR . . .                       ..   ..   .. ..   ...   ....    ..   ..   ..... ...     .   17
                                                                                                  6.4 BATTERY . . . . . . . . . . . . . . . . . . .      ..   ..   ....    ...   .. ..   ..   ..   ... .....     .   17
                                                                                                  6.5 MAINS POWER . . . . . . . . . . . . . . .          ..   ..   ....    ...   . ...   ..   ..   .. .. ... .   .   17

                                                                                                SECTION 7 ENVIRONMENTAL REQUIREMENTS
                                                                                                  7.1 TEMPERATURE AND HUMIDITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                             18
                                                                                                  7.2 ENCLOSURE PROTECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                       18
                                                                                                  7.3 MAINS POWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .              18
                                                                                                  7.4 WIND LOADING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .               18
                                                                                                  7.5 NOISE CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .              18
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                                                                                                  7.6 RADIO INTERFERENCE SUPPRESSION . . . . . . . . . . . . . . . . . . . . . . . . .                               18
                                                                                                  7.7 SURGE AND TRANSIENT PROTECTION . . . . . . . . . . . . . . . . . . . . . . . .                                 18
                                                                                                  7.8 IMMUNITY FROM ELECTROMAGNETIC INTERFERENCE . . . . . . . . . .                                                 18

                                                                                                APPENDICES
                                                                                                  A PURCHASING GUIDELINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
                                                                                                  B SYSTEM ELEMENTS AND OPERATING PRINCIPLES . . . . . . . . . . . . . . . 20
                                                                                                  C RELATIONSHIP BETWEEN ALL-RED INTERVAL AND TRAVEL
                                                                                                    DISTANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
                                                                                                                                            5                                          AS 4191—1994




                                                                                                                           STANDARDS AUSTRALIA

                                                                                                                                  Australian Standard
                                                                                                                       Portable traffic signal systems

                                                                                                      S E C T I O N           1     S CO P E       A N D      G E NE R A L
                                                                                           1.1 SCOPE This Standard specifies requirements for the design, construction and
                                                                                           performance of three-colour portable signal systems for use where temporary control of
                                                                                           vehicular traffic is required, such as at road or bridge works. It provides for two main forms
                                                                                           of control, viz. shuttle control and plant-crossing control.
                                                                                           The Standard does not cover the use of portable traffic signal systems in specific road
                                                                                           situations which is normally the subject of regulation by the relevant traffic authority.
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                                                                                             NOTES:
                                                                                             1    See Appendix A for the information that should be supplied with an enquiry or order for
                                                                                                  portable traffic signal systems to the requirements of this Standard.
                                                                                             2    Information on the basic system elements and operating principles of portable traffic signal
                                                                                                  systems is given in Appendix B.
                                                                                             3    Guidance on the use of portable traffic signal systems is provided in AS 1742.3.

                                                                                           1.2 REFERENCED DOCUMENTS The following documents are referred to in this
                                                                                           Standard:
                                                                                           AS
                                                                                           1170   Minimum design loads on structures (known as the SAA Loading Code)
                                                                                           1170.2 Part 2: Wind loads
                                                                                           1742   Manual of uniform traffic control devices
                                                                                           1742.3 Traffic control devices for works on roads
                                                                                           1939     Degrees of protection provided by enclosures for electrical equipment (IP Code)
                                                                                           2144     Traffic signal lanterns
                                                                                           2344     Limits of electromagnetic interference from overhead a.c. power lines
                                                                                           2513     Electrical connectors for trailer vehicles
                                                                                           2700     Colour standards for general purposes
                                                                                           3100     Approval and test specification —General requirements for electrical equipment
                                                                                           3108     Approval and test specification — Particular requirements for isolating transformers
                                                                                                    and safety isolating transformers
                                                                                           4113   Traffic signal lamps
                                                                                           4113.2 Part 2: Lamps for a.c. operation at extra-low voltage
                                                                                           AS/NZS
                                                                                           1044   Limits and methods of measurement of radio interference characteristics of
                                                                                                 household electrical appliances, portable tools and similar electrical appliances
                                                                                           OTHER DOCUMENT
                                                                                           Vehicle Standards Bulletin No.1: Building small trailers. Federal Office of Road Safety,
                                                                                           Canberra.




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                                                                                                             AS 4191-1994, Portable traffic signal systems
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