A Study on Expressway Network aiming at the Environment Quality

Abstract

We studied the possibility to diminish the damage of noise and air pollution by High Grade Road Network.
An environment evaluation system was con structed for a wide area of city. Three technical and political measures were considered: 1) the close distance of interchange from city, 2) the short distance between interchanges, and 3) the discount toll for short trip.
These measures we re analised for two purposes: the change of demand and that of the environment condition in a large area of the city.
Finally, we presented the increase of demandfor High Grade Roads considering the reduction of smog emission and noise damage inside the city.