Appendix GSignal timings#

G.1Introduction#

Phase intervals in a group-based controller may have different names and/or slightly different functionality from the phase intervals in a TRAFF controller. Time settings may vary from those specified here, and in Austroads Guide to Traffic Management, if based on sound engineering calculation demonstrating that an appropriate level of safety is maintained. Refer to the relevant Transport and Main Roads design guides and the manufacturers' manuals for more information.

G.4Vehicle settings#

G.4.6Vehicle clearance settings#

Yellow time#

Formula A2 in Austroads Guide to Traffic Management Appendix G Section G.4.6 Yellow Time shall be used. The design speed for the calculation of yellow times should be the posted speed of the approach to the intersection.

All-red time#

Formula A3 in Austroads Guide to Traffic Management Appendix G Section G.4.6 All-red Time shall be used.

For through movements, the design speed should be, in the initial calculation, the posted speed of the approach. For left- and right-turning movements, it should be 35 km/h or 45 km/h respectively.

Designers and/or operators shall ensure the resultant all-red time is appropriate, considering any site-specific factors. Further guidance on allowing for bicycles at traffic signals is given elsewhere in Austroads guidelines and reports.

G.5.2Minimum green setting#

Section G.5.2 in Austroads Guide to Traffic Management Part 9 Transport Control Systems – Strategies and Operations Appendices is not accepted and does not apply in Queensland.