ABSTRACT
There are three basic methods to reduce traffic volumes on surface transportation facilities. These include restrictions on access to the facilities themselves, on the vehicles that use those facilities, and on the occupants of vehicles that use those facilities. Surface transportation can be restricted directly through access controls or construction limitations on basic infrastructure. Adequate infrastructure usually is described as that which is capable of meeting ordinary travel demands with nunimal traffic congestion most of the time. Travel restrictions may be of a broad and general nature or quite specific in character and application. General travel restrictions are the apotheosis of urban transportation planning in the US The fundamental guiding principle of most transportation planners is to foster urban mobility by reducing barriers to travel whenever and wherever possible. It is difficult to see how govemment regulation can be used to restrict vehicle ownership in the US.
