TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 403: Adaptive Traffic Control Systems: Domestic and Foreign State of Practice explores the state of practice of adaptive traffic control systems (ATCSs), also known as real-time traffic control systems, which adjust, in real time, signal timings based on traffic conditions, demand, and system capacity.
National Research Council. NCHRP Synthesis 403: Adaptive Traffic Control Systems: Domestic and Foreign State of Practice. Washington, DC: The National Academies Press, 2010.
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