This paper presents an approach to use dynamic reference values together with state estimations for applying a classical feedback control scheme for rerouteing decisions in motorway networks. Within this scheme a rerouteing algorithm is designed using different approaches from linear and nonlinear control theory. A section about the test field shows the practical requirements for the algorithms when applied in a field trial. The efficiency of this approach is underlined by simulation results applying a macroscopic traffic flow model and an OD estimation algorithm to a real motorway topology. Data from loop detectors of the test site are used to bring the simulated scenarios close to reality.
This paper mainly focuses on the recent development of MOTION system. MOTION system, as a developing urban adaptive traffic signal control system, is now more and more worldwide recognized. In this paper, first the original idea of MOTION is descript. Calculation procedures of MOTION algorithm are followed. Then methods of optimization, including optimization of green split, optimization of cycle time, optimization of offset times are introduced. Platoon Model, as a vital concept in optimization of offset times, are explained in details. Multi functional levels in MOTION system including the tactical level and the operational level are introduced in figures. At last, implementation results of MOTION system in Germany are shown to prove MOTION as a very efficient method in improving urban traffic quality.
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