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Model for accurate speed measurement using double-loop detectors

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2 Author(s)
Yong-Kul Ki ; Dept. of Comput. Sci. & Eng., Korea Univ., Seoul, South Korea ; Doo-Kwon Baik

Vehicle speed is an important parameter in measurements of road traffic. At present, double-loop detectors are generally used for vehicular speed measurement. However, these detectors incur errors caused by scanning time, spacing between double loops, irregular vehicle trajectories, and the presence of multiple vehicles in the detection zone. This paper suggests a new model that uses an error-filtering algorithm to improve the accuracy of speed measurements. In the field tests, all percent errors of the vehicular speeds measured by the proposed model were within the error tolerance limit (plusmn5%). Furthermore, the variance of percent errors was reduced. Therefore, it can be concluded that the proposed model significantly improves vehicle-speed-measuring accuracy

Published in:

IEEE Transactions on Vehicular Technology  (Volume:55 ,  Issue: 4 )