Partial Outer Convexification for Traffic Light Optimization in Road Networks

  title={Partial Outer Convexification for Traffic Light Optimization in Road Networks},
  author={Simone G{\"o}ttlich and Andreas Potschka and Ute Ziegler},
  journal={SIAM J. Sci. Comput.},
We consider the problem of computing optimal traffic light programs for urban road intersections using traffic flow conservation laws on networks. Based on a partial outer convexification approach, which has been successfully applied in the area of mixed-integer optimal control for systems of ordinary or differential algebraic equations, we develop a computationally tractable two-stage solution heuristic. The two-stage approach consists of the solution of a (smoothed) nonlinear programming… 

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