New Aggregation Strategies to Improve Velocity Estimation from Single Loop Detectors

Benjamin Coifman and Zu-Hsu Lee

Institute of Transportation Studies, Research Reports, Working Papers, Proceedings from Institute of Transportation Studies, UC Berkeley

Abstract: Loop detectors are the preeminent vehicle detector for freeway traffic surveillance. Although single loops have been used for decades, debate continues on how to interpret the measurements. Many researchers have sought better estimates of velocity from single loops. The preceding work has emphasized post-processing techniques. Although rarely noted, these techniques effectively seek to reduce the bias due to long vehicles in measured occupancy and flow. This paper presents a different approach, using a new aggregation methodology to estimate velocity and reduce the impact of long vehicles in the original traffic measurements. Keywords: traffic surveillance, loop detectors, velocity estimation

Keywords: Motor vehicles--Speed--Measurement--Electronic equipment; Loop detectors (search for similar items in EconPapers)
Date: 2000-08-01
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