عنوان مقاله [English]
Nowadays, with the increasing growth of vehicles and increasing of trips and also financial constraints and roads development, transportation network managers eager to follow transportation demand management. Application of traffic restraint is one of the methods that reduce the supply and demand transportation. In this paper, to investigate the effects of trip restrictions for heavy vehicle, driven old road Qom - Tehran and its alternative paths during the traffic restraint for heavy vehicles, there have been studied. Traffic information in three different periods of time including restriction time, the same period in the weeks before and after the restriction of detectors mounted on each road were obtained. Based on the results observed during the restriction period in addition to reducing the number of heavy vehicles, passenger cars are too low. Also, Assumption was that the goal of banning heavy vehicles traffic on the old road and transfer to Tehran-Qom freeway has not been met. Based on the data recorded in road alternatives, it cannot be observed a significant change in traffic volume of heavy vehicles over the period of time.