TEHRAN TRANSPORTATION POLLUTION LOAD ESTIMATION FOR THE ASSESSMENT OF EMISSIONS REDUCTION SCENARIOS

Personal cars have been considered as a main air pollution sources. The amount of vehicle emissions correlates with urban traffic, which is affect average trip speed. With the use of Tehran emissions model of personal cars, and the online data of speed and travel time, instantaneous NOx, HC and CO mass production were calculated. Emission model was developed based on thirty portable emission tests and speed data were obtained by traffic sensors installed in a few highways of Tehran. The important application of this system is to assessment of transportation emissions reduction scenarios.