Extent of Highway Capacity Manual Use in Planning

Abstract

The Highway Capacity Manual (HCM), a publication of the Transportation Research Board, is used for a variety of transportation facility and traffic engineering applications. This study reports on the current use of the HCM in transportation planning by federal, state, regional, and local agencies. The scope includes performance monitoring, problem identification, project prioritization, programming, and decision-making processes. Information was gathered through a literature review, a survey of selected agencies, and in-depth interviews.

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