Abstract
Due to strong regionally of the motor vehicle emission and relatively closeness of urban tunnel, motor vehicle exhaust pollution in the tunnel is very serious. Serious pollution cause serious harm to human body health. To estimate CO emissions of urban tunnel under one-way traffic flow, considering motor vehicle ownership, emissions standards, vehicle emissions, emission factors, and transportation operation factors, CO emission model of urban tunnel is proposed. Comprehensive emission factor of CO is computed by the method of mass balance. CO emission factor of different type vehicles is computed using the method multiple regression analysis. Real vehicle road test is designed to verify this CO emissions model of urban tunnel under one-way traffic flow.
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