Investigating The Urban Intersection Emissions Based On Micro-simulation Model

With the rapid development of transportation system in recent years, the traffic congestion and pollution is also increasing. Urban traffic network because of its geographical location and personnel and the traffic flow characteristics, its pollution problem has received widespread attention.In order to get accurate quantitative motor vehicles emissions, use of the VISSIM traffic simulation model and emission model MOVES integration, set up a platform of vehicle emission evaluation. The first step is using the measured date to adjust the platform. Using VISSIM to get the output date of vehicle running status second by second. Computing the output date by the formulation of VSP, and combined with the instantaneous emission model—— MOVES for the definition of operation mode to get the vehicle operation mode distribution. The operation mode distribution as a input parameters for the calculation of vehicle emissions by MOVES. Then get a high accuracy quantification of vehicle emissions. And selected a typical instances of plane intersections as a example, get the vehicle emission inventory of CO、HC、PM10 and PM2.5. Then the emission space distribution, time distribution and pollutant characteristics are analyzed. On the basis of the inventory, emission optimization measures are put forward. Selected the left-turning restriction and traffic control as typical strategies to evaluate their capability of reducing emission by the platform.Show that both of them are good for emission reduction.