The rapid economic growth and urban sprawl of Bangkok have resulted in higher
volumes of inner city freight transportation. The increased usage of trucks, especially
heavy trucks, has a major impact on traffic conditions, road safety and the environment of
the city. To address the negative effects of heavy truck movements, the Government has
formulated a number of truck operation policies and taken other measures. Time-based
truck restrictions, zonal restrictions, and three suburban truck terminals have been
introduced in order to restrict heavy trucks from entering the inner city. However, these
policies and measures have strengthened the role of smaller trucks and vans in transporting
goods in inner Bangkok.