Travel Time Estimation on Urban Street Segment

  • Jelena Kajalić The Faculty of Transport and Traffic Engineering, Belgrade University
  • Nikola Čelar The Faculty of Transport and Traffic Engineering, Belgrade University
  • Stamenka Stanković The Faculty of Transport and Traffic Engineering, Belgrade University
DOI: https://doi.org/10.7307/ptt.v30i1.2473
Keywords: urban street, level of service, speed-flow curve, travel time survey,

Abstract

Level of service (LOS) is used as the main indicator of transport quality on urban roads and it is estimated based on the travel speed. The main objective of this study is to determine which of the existing models for travel speed calculation is most suitable for local conditions. The study uses actual data gathered in travel time survey on urban streets, recorded by applying second by second GPS data. The survey is limited to traffic flow in saturated conditions. The RMSE method (Root Mean Square Error) is used for research results comparison with relevant models: Akcelik, HCM (Highway Capacity Manual), Singapore model and modified BPR (the Bureau of Public Roads) function (Dowling - Skabardonis). The lowest deviation in local conditions for urban streets with standardized intersection distance (400-500 m) is demonstrated by Akcelik model. However, for streets with lower signal density (<1 signal/km) the correlation between speed and degree of saturation is best presented by HCM and Singapore model. According to test results, Akcelik model was adopted for travel speed estimation which can be the basis for determining the level of service in urban streets with standardized intersection distance and coordinated signal timing under local conditions.

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Jelena Kajalić, The Faculty of Transport and Traffic Engineering, Belgrade University
Teaching assistant, PhD student, Faculty of Transport and Traffic Engineering, Belgrade University
Nikola Čelar, The Faculty of Transport and Traffic Engineering, Belgrade University
Assistant proffesor, Faculty of Transport and Traffic Engineering, Belgrade University
Stamenka Stanković, The Faculty of Transport and Traffic Engineering, Belgrade University
Teaching assistant, PhD student, Faculty of Transport and Traffic Engineering, Belgrade University

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Published
2018-02-23
How to Cite
1.
Kajalić J, Čelar N, Stanković S. Travel Time Estimation on Urban Street Segment. Promet [Internet]. 2018Feb.23 [cited 2024Nov.23];30(1):115-20. Available from: https://traffic.fpz.hr/index.php/PROMTT/article/view/2473
Issue
Vol 30 No 1 (2018)
Section
Articles

Copyright (c) 2018 Jelena Kajalić, Nikola Čelar, Stamenka Stanković

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