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This paper discusses some results of extensive research on actuated control methods conducted at ARRB Transport Research, Australia, in recent years (1-6). Other recent ARRB TR research on actuated and fixed-time signal timing and performance has produced a substantial body of related information (7-9). This work is related to established methods for signal timing and performance analysis in use in Australia (ARR 123), USA (Highway Capacity Manual) and the UK (10-12).

A detailed method for estimating average cycle time and green times for various types of actuated signal control was developed (1, 2). The method was successfully adopted in the recent US research, and is now being incorporated into the 1997 version of the Highway Capacity Manual (13). Analyses using microscopic simulation models NETSIM (USA) and MODELC (Australia) showed that this method predicts actuated signal timings …