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Published: 1980

Total Pages: 72

ISBN-13:

The report reviews, synthesizes, and interprets the impacts and costs of urban traffic control system improvements. Four major categories of control system improvements are covered: coordination of traffic signals; optimization of traffic signal timing; advanced computer-based master control systems; and freeway traffic management systems. Project level impacts and areawide impacts are given for various types of traffic control projects and comprehensive combined programs. The current implementation status of the different types of traffic control improvements, institutional impediments, and cost effectiveness is discussed. Special treatment is given to the impacts of improved traffic control on energy consumption.