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Improved velocity estimation using single loop detectors

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  • Coifman, Benjamin

Abstract

This paper develops an improved algorithm for estimating velocity from single loop detector data. Unlike preceding works, the algorithm is simple enough that it can be implemented using existing controller hardware. The discussion shows how the benefits of this work extend to automated tests of detector data quality at dual loop speed traps. Finally, this paper refutes an earlier study that found conventional single loop velocity estimates are biased.

Suggested Citation

  • Coifman, Benjamin, 2001. "Improved velocity estimation using single loop detectors," Transportation Research Part A: Policy and Practice, Elsevier, vol. 35(10), pages 863-880, December.
    • Handle: RePEc:eee:transa:v:35:y:2001:i:10:p:863-880
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    References listed on IDEAS

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    1. Dailey, D. J., 1999. "A statistical algorithm for estimating speed from single loop volume and occupancy measurements," Transportation Research Part B: Methodological, Elsevier, vol. 33(5), pages 313-322, June.
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    Cited by:

    1. Coifman, Benjamin, 2004. "Distributed Surveillance and Control on Freeways," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt2wx1d9ck, Institute of Transportation Studies, UC Berkeley.
    2. Soriguera, F. & Rosas, D. & Robusté, F., 2010. "Travel time measurement in closed toll highways," Transportation Research Part B: Methodological, Elsevier, vol. 44(10), pages 1242-1267, December.
    3. Kockelman, Kara M. & Ma, Jianming, 2007. "Freeway Speeds and Speed Variations Preceding Crashes, Within and Across Lanes," Journal of the Transportation Research Forum, Transportation Research Forum, vol. 46(1).
    4. Xu, Guanhao & Gayah, Vikash V., 2023. "Non-unimodal and non-concave relationships in the network Macroscopic Fundamental Diagram caused by hierarchical streets," Transportation Research Part B: Methodological, Elsevier, vol. 173(C), pages 203-227.
    5. Gao, Yuhong & Qu, Zhaowei & Song, Xianmin & Yun, Zhenyu & Xia, Yingji, 2021. "A novel relationship model between signal timing, queue length and travel speed," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 583(C).
    6. Coifman, Benjamin, 2014. "Revisiting the empirical fundamental relationship," Transportation Research Part B: Methodological, Elsevier, vol. 68(C), pages 173-184.
    7. Ponnu, Balaji & Coifman, Benjamin, 2015. "Speed-spacing dependency on relative speed from the adjacent lane: New insights for car following models," Transportation Research Part B: Methodological, Elsevier, vol. 82(C), pages 74-90.
    8. Sogutlugil, Mihriban, 2005. "Examining the Effects of Variability in Average Link Speeds on Estimated Mobile Source Emissions and Air Quality," University of California Transportation Center, Working Papers qt9j08v6rr, University of California Transportation Center.
    9. Coifman, Benjamin & Varaiya, Pravin, 2002. "Deployment and Evaluation of Real-Time Vehicle Reidentification from an Operations Perspective," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt6tp5w2gt, Institute of Transportation Studies, UC Berkeley.
    10. Zheng, Zuduo & Ahn, Soyoung & Chen, Danjue & Laval, Jorge, 2011. "Applications of wavelet transform for analysis of freeway traffic: Bottlenecks, transient traffic, and traffic oscillations," Transportation Research Part B: Methodological, Elsevier, vol. 45(2), pages 372-384, February.
    11. Agafonov, Evgeny & Bargiela, Andrzej & Burke, Edmund & Peytchev, Evtim, 2009. "Mathematical justification of a heuristic for statistical correlation of real-life time series," European Journal of Operational Research, Elsevier, vol. 198(1), pages 275-286, October.
    12. Coifman, Benjamin, 2004. "An Assessment of Loop Detector and RTMS Performance," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt3qt5909m, Institute of Transportation Studies, UC Berkeley.

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