Traffic signals: new techniques for capacity and timing analysis

The work of ARRB bulletin no 4 revision subcommittee has now been completed and ARRB research report arr no 123 - traffic signals: capacity and timing analysis, by akcelik, r has been published the report replaces arr no 79 - signalised intersections: capacity guide which was a reprint of bulletin no 4 (including metrication of units and minor editorial changes). The new report introduces substantial changes from the earlier publications. However, the main purpose remains the same: to serve both as a basic reference book for traffic engineers involved in the design and operation of traffic signals and as an instructive text for traffic engineering students. With this purpose in mind, the report presents a detailed and step by step description of the recommended techniques and provides the background to these techniques.