Page "Transportation planning" Paragraph 27

Since World War II, this attitude in planning has resulted in the widespread use of travel modeling as a key component of regional transportation planning.

The models ’ rise in popularity can also be attributed to a rapid increase in the number of automobiles on the road, widespread suburbanization and a large increase in federal transportation spending in urban areas.

All of these phenomena dominated the planning culture in the late 1940s, 1950s and 1960s.

Regional transportation planning was needed because increasingly cities weren ’ t just cities anymore, but parts of a complex regional system.