Assessing Effect of Traffic Signal Control Strategies on Vehicle Emissions

In response to the increased traffic congestion and worsened air pollution, using the portable emission measurement system (PEMS), this paper collects and compares the real world emissions under signal coordination and non-coordination in Beijing, and analyzes the emission levels and distribution characteristics under these two control strategies. Furthermore, by integrating the microscopic traffic simulation model of VISSIM and the VSP-based approach of emission modeling, the paper develops an integrated microscopic simulation platform of traffic emissions, which is finally used to evaluate the impact of two traffic control strategies, alternative signal timing and traffic flow on emissions.