The papers in this volume are from the 1995 Annual Meeting of the Transportation Research Board and are related by their focus on transportation systems management. They discuss intelligent transportation systems (ITS), high occupancy vehicle (HOV) systems, freeway operations, and traffic signal systems and cover a wide range of problems reflecting the concerns of theoreticians and practioners. These specific areas of traffic operations are receiving considerable attention because of the emphasis on ITS, provisions of the Intermodal Surface Transportation Efficiency Act (ISTEA), implications of the Clean Air Act Amendments, ever-increasing traffic congestion, and recognition of the importance of incident management for reducing nonrecurring traffic congestion. Those readers with an interest in freeway operations will find papers related to freeway flows, freeway management, incident management, and ramp metering. The specific area of HOV systems has papers related to reversible lanes and evaluation of existing systems. Traffic signal systems are examined in papers related to real-time traffic signal systems, bus priority systems, and computer models for traffic signal systems.
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