Assessing the quality of complex fixed-time traffic signals

Kurzfassung

Usually, the parameters of fixed-time traffic signals – which are still the most common type of signals in the world – will be determined on the basis of a characteristic traffic demand pattern. So, their quality assessment is also based on this single traffic demand pattern. This work describes a more complete assessment method which is better suited to find the average performance of the signal. The method is especially well adopted to complicate intersections with a large number of different traffic streams and traffic signal phases. In principle, this approach can also be used not only for the analysis, but also for the generation of a good set of traffic signal parameters.