Developing pollutant emission models for light and heavy trucks in Tehran

This paper presents trucks’ pollutant models based on vehicle’s speed for main public vehicles’ pollutants including CO, NOx, PM10, VOC, CH4, HC and SO2.The traffic emissions arecalculated in three route’s slope conditions for horizontal, downhill and uphill which are modeled based on an instantaneous emissionmodel integrated with a macroscopic traffic simulation model. Vehicle emission rates depend to its type, the instantaneous speedand vehicle’s route slope conditions. Integrated emission models are applied for trucks, which are classified into two categories includinglight good vehicle and high good vehicle so after presenting emission models, accuracy of them are evaluated by empirical measurements.Some models which are not good compatible with empirical data, have been changed by describing new emission form and new modelsvalidity are evaluated by empirical data. Consequently, by considering correlation coefficients can be evaluated new emission models are valid