Stochastic Optimization for Macroscopic Urban Traffic Model with Microscopic Elements

Abstract

The Cell Transmission Model for Urban Traffic (CTM-UT) is a macroscopic model with microscopic traffic elements for complex traffic dynamics of arterial and node. In this paper we presented the surrogate method (SM) to optimize the signal synchronization problem considering every turns in accord with the CMT-UT framework. Some extensions to improve the efficiency and efficacy of the surrogate method are proposed. Preliminarily experiments indicate that the CTM-UT can be well-applied for the signal synchronization of realtime urban traffic with good trade-off of efficiency respect to a macroscopic model.