Computer Vision and Imaging in Intelligent Transportation Systems

7Intersection Monitoring Using Computer Vision Techniques for Capacity, Delay, and Safety Analysis

Brendan Tran Morris¹ and Mohammad Shokrolah Shirazi²

¹ University of Nevada, Las Vegas, NV, USA

² Cleveland State University, Cleveland, OH, USA

Vision‐Based Intersection Monitoring

7.1 Vision‐Based Intersection Analysis: Capacity, Delay, and Safety

The chapter provides a discussion of traffic analysis at intersections for capacity, delay, and safety analysis. Traffic cameras are utilized for all three goals through vision‐based measurement of intersection counts, queue analysis, and finally safety analysis. Sections 7.1.1 and 7.1.2 highlight the importance of intersection monitoring and the underlying advantages of using computer vision techniques. The overview of the intersection analysis system is explained in Section 7.2, and each intersection application is discussed separately in its own section.

7.1.1 Intersection Monitoring

Intersections are planned conflict points on roads which are essential for connecting different geographic areas. They are generally monitored for design and safety goals. The design of intersections includes determining the need and placement of traffic signals, bike paths, and pedestrian walkway features as well as predicting how the specific layout affects existing and future traffic operations. The accuracy of this prediction is challenging since many parameters such as vehicle turning, queuing at intersections, and overall level of service can contribute to ...