Applying Fuzzy Logic to Real Road Traffic (Dresden: Dohnaer Strasse)

Ulrike Trommer

Institute for Land and Sea Transport Systems, Transport Systems Planning and Transport Telematics, TU Berlin

We developed a signal plan selection for the main road B175 in the south-east of Dresden -- an important connection to Saxon Switzerland and Czech Republic. This selection is based on Fuzzy-Logic responsive to the currently prevailing traffic conditions. A chain of 14 intersection were considered in the fuzzy controler. While the signal plans of these intersections as well as the location of the traffic detectors have to be kept unchanged, the pre-calculated signal plans are activated according to the suitability values computed by the fuzzy controler. A performed online test resulted in promising results, but no optimizeation algorithm was applied. In order to optimize fuzzy sets and rule base a microsimulation model should be used. New control strategies, creating signal plans responsive to the current traffic, for coordinated chains and networks in urban areas could be the outcome of employing for instance multi-agent simulation models.