An extended control scheme for variable routing using measured turning rates

This paper shows the application of an extended control scheme using dynamic reference values on variable direction signs. Within this control scheme a special feedback controller is designed behind the traffic model and control algorithm which uses approaches from linear control theory. This extended scheme avoids the use of origin destination (OD) estimations as well as prognosis with respect to uncertainties of models and parameters especially like the compliance rate. Thus parts of the traffic model are replaced by a feedback controller using measured turning rates. The efficiency of this approach is underlined by simulation results applying a macroscopic traffic flow model and an OD estimation to a real motorway topology. Data from loop detectors of the test site are used to bring the simulated scenario close to reality. It is shown that the proposed algorithms are insensitive to estimation errors to be expected when applying the models to reality.