State-of-the-practice signal timing techniques used at isolated actuated controlled intersections can result in suboptimal operation. This paper proposes a new tactical control algorithm that integrates real-time stop bar presence detection with real-time flow rate information to identify a downstream flow restriction. If a flow restriction is identified, a phase with a constant call could be terminated earlier than its specified maximum or split time. This algorithm was validated with real-time data to predict downstream bottleneck conditions and then by viewing the archived video for confirmation of the condition. The algorithm was applied during a 504-h period of signal operation. During this period, the algorithm identified 76 bottlenecks. Overall, 75.0% of these events were visually confirmed. Algorithm failures were caused by a variety of conditions such as large trucks, inattentive drivers, and detector errors.
Evaluation of Flow-Based Traffic Signal Control Using Advanced Detection Concepts
Transportation Research Record
Transportation Research Record: Journal of the Transportation Research Board ; 1978 , 1 ; 25-33
2006-01-01
Article (Journal)
Electronic Resource
English
Evaluation of Flow-Based Traffic Signal Control Using Advanced Detection Concepts
British Library Conference Proceedings | 2006
|Evaluation of Flow-Based Traffic Signal Control Using Advanced Detection Concepts
Transportation Research Record | 2006
|Evaluation of Flow-Based Traffic Signal Control Using Advanced Detection Concepts
Online Contents | 2006
|Advanced concepts in air traffic control
SLUB | 1974
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