of air pollution exhausted from the traffic on general roads except special roads such as interchanges ... Moreover, this system was supplied a Graphic User Interface (GH) for the user who calculated the concentration ... This system can offer not only the numerical result but also a graphic display.
It is well known that roadtraffic is one of the main sources of pollution affecting air quality in urban ... traffic (veh h-1) vehicular emission factors (g km-1) road length (km) The database of emission factors ... dispersion may have a lower speed than that simulated by the model. this effect, which we have defined