Review of transport emission modeling and monitoring in urban areas — Challenge for developing countries

Emissions from represent a major component of airborne pollution. Transportation emission models are part of the modeling process of transportation planning. It introduces an important tool for the environmental evaluation of different transportation scenarios. Worldwide, there are several emission models. These models are categories to static and dynamic models. It depends on the amount of available data for the emission modeling. Monitoring emissions in a study area is also an important tool of validating such emission models. In this paper, an analysis and comparison between transport emission models are used in estimating emissions from road traffic systems in urban areas has been introduced. The paper discusses the limitations and potentials of each type of transport emission models. The difficulties against applying these models in developing countries are also discussed. The study also determines the required steps towards realistic modeling of emission from transportation systems in developing countries. Moreover, different methods used for road traffic emission monitoring have been investigated.