Abstract: Traffic detectors support most traffic management applications, so it is important that a detector performs as expected. This study evaluates the performance of four loop sensor models and the remote traffic microwave ...

Abstract: This paper uses an instrumented probe vehicle to monitor ambient traffic and overcome many challenges of observing traffic flow phenomena that occur over extended distances. One contribution of this paper is a general ...

Abstract: The accuracy of detector data is paramount for traffic surveillance, control, and information systems, yet little has been published on identifying or correcting errors in the data. This paper presents eight detector ...

Abstract: This paper presents an analytical methodology to increase the accuracy of speed estimates from freeway traffic detectors by integrating information across lanes. Typically these estimates are quite noisy due to unobserved ...

Abstract: This paper presents an improved algorithm for matching individual vehicle measurements at a freeway detector station with the vehicles’ corresponding measurements taken at another detector station located upstream. The ...

Abstract: Loop detectors are the most commonly used vehicle detector for freeway management. A loop detector consists of a physical loop of wire embedded in the pavement connected to a sensor located in a nearby cabinet. The sensor ...