Research on Unregulated Emissions from Motor Vehicles at Intersection Based on the Optimized Traffic Signal Timing

Abstract

This paper centers on optimizing the signal timing scheme to reduce motor vehicle unregulated emissions from motor vehicles at the intersection by the integration method of VISSIM and MOVES. Taking the intersection of Hong Kong Middle Road and Fuzhou South Road in Qingdao as the research object. In VISSIM, according to the traffic flow, the signal timing scheme is optimized. The localized MOVES emission model calculates emissions of formaldehyde, ammonia and benzene. Compared with emissions of regulated pollutants before and after the optimization for the signal timing scheme, the result shows the optimized signal timing improves the passing capacity of the road intersection, and emissions of formaldehyde, NH3 and benzene reduces by 22%, 7% and 14% respectively. The result indicates that the optimized signal timing can effectively reduce motor vehicle unregulated emissions at the road intersection, which provides an effective way to protect the environment.