Research undertaken to inform the High risk intersections guide showed there was a higher risk of death and serious injury at some urban signalised intersections than at other intersections using the same control types. The reasons why some urban signalised intersections are less safe than others are not well understood. The research presented in this report compares urban signalised intersections with good safety performance with those that perform poorly to understand the reasons for their differences.
The environmental, physical and operational factors identified as contributory factors to poorer safety performance are determined qualitatively in this research. The results of the research will assist practitioners by:
Keywords: crashes, intersection, road safety, safety, signalised intersection, signals, traffic lights, traffic signal, urban intersection, urban signals