Which professional application in the 1950s marked the beginning of integrated transportation-land use modeling?

Answer

Chicago Area Transportation Study

The Chicago Area Transportation Study, led by Voorhees in the 1950s, represented a concrete, large-scale professional expression of applying formal models to urban problems, specifically integrating transportation and land use.

Which professional application in the 1950s marked the beginning of integrated transportation-land use modeling?
inventorcityanalysisurban analytic