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Assessing the Accuracy of Average Travel Speeds from Floating Car Data on Urban Street Facilities

Lelke, Torben ; Fuchs, Lea 1; Friedrich, Bernhard; Vortisch, Peter 1
1 Institut für Verkehrswesen (IFV), Karlsruher Institut für Technologie (KIT)

Abstract:

To improve traffic flow on regularly congested roads in a network, the performance of these roads has to be evaluated. The average travel speed is a crucial indicator of traffic quality and is used in several performance evaluation methods. Floating Car Data (FCD) obtained from vehicles equipped with GPS offers continuous and ubiquitous data acquisition, making it a potential alternative to conventional speed detection methods. However, the limited penetration and representativeness of detected vehicles pose challenges. This work investigates the suitability of commercially available FCD for determining accurate space-mean speeds. Ground truth data was collected using Automatic Number Plate Recognition (ANPR), and a comparison analysis was performed with FCD-derived travel times and space-mean speeds. Different statistical measures were applied to evaluate the accuracy of FCD data. The results indicate a generally acceptable correlation between the two data sources, but deviations occur, especially for time intervals with a low number of detected FCD trajectories. Subsequent analyses suggest that a minimum number of five trajectories per hour are sufficient to derive valid space-mean speeds. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000169894
Veröffentlicht am 12.04.2024
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Verkehrswesen (IFV)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2024
Sprache Englisch
Identifikator ISSN: 2352-1465
KITopen-ID: 1000169894
Erschienen in Transportation Research Procedia: 25th Euro Working Group on Transportation Meeting, EWGT 2023, Santander, 6th-8th September 2023
Verlag Elsevier
Band 78
Seiten 570 – 577
Bemerkung zur Veröffentlichung 25th Euro Working Group on Transportation Meeting, EWGT 2023, Santander, 6th-8th September 2023
Vorab online veröffentlicht am 23.02.2024
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