Effective Placement of Detectors at Diamond Interchanges
Effective Placement of Detectors at Diamond Interchanges

Author: Dayakar Prabhakar

Publisher:

Published: 1994

Total Pages: 82

ISBN-13:

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This report summarizes results of a study of detector placement on the diamond interchange frontage road (ramp) using the Texas Intersection Simulation Model. The criterion used for the optimization is the minimization of delay. A secondary criterion is to reduce the dilemma zone to a minimum. The results indicate that the first detector located along the frontage road (ramp) should be placed about 30 meters (100 feet) back from the stop bar. The remainder of the layout should provide a vehicle interval between 1.1 and 1.3 seconds and not trap a vehicle a the design speed in a dilemma situation. The recommended layout of detectors achieves these two goals.

Integrated Arterial and Freeway Operation Control Strategies for IVHS Advanced Traffic Management Systems
Integrated Arterial and Freeway Operation Control Strategies for IVHS Advanced Traffic Management Systems

Author:

Publisher:

Published: 1998

Total Pages: 140

ISBN-13:

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The main focus of this study is congestion, primarily that occurring on freeway corridors in metropolitan areas. Lack of coordination in the operation of various components of the system is often a major source of inefficiency, resulting in greater delays to motorists than what might be achievable with the existing physical infrastructure. The main objective of the study is to improve corridor network management by coordinating the various control elements in a freeway corridor, for both recurrent and nonrecurrent congestion situations.