Proactive assessment of road curve safety using floating car data: An exploratory study

• Autorzy: Ambros Jiří , Altmann Jarosław , Jurewicz Chris , Chevalier Anna

Identyfikatory

DOI

10.5604/01.3001.0013.5570

• Języki publikacji: EN

Abstrakty

EN

Driving speed is an important risk factor, especially when negotiating horizontal curves. Therefore it may be useful in extracting surrogate measures to proactively safety assessment, a practice consistent with a current shift towards a Safe System approach to addressing road trauma. Review of previous literature indicated two categories of studies: (1) studies focusing on a safe driving perspective, i.e. studies primarily interested in finding the cut-off point in FCD data characteristics between safe and unsafe driving; (2) studies focusing on relating meaningful risk rates (percentages of exceeding the risk thresholds) to specific locations, and thus identify safety critical sites. However, no study was found that specifically focused on the relationship between kinematic characteristics (other than just speed) and road curves. The presented study focused on exploring the relationship between acceleration and jerk thresholds and crashes occurring on road curves. The first objective was to determine meaningful acceleration and jerk thresholds to utilize in explaining safety performance when negotiating curves. For this purpose floating car data (FCD) from a fleet of company vehicles, driving in rural sections of national roads in the Czech Republic, was collected and used to derive and validate potential surrogate safety measures. FCD presents in-vehicle information with several benefits compared to traditional techniques, such as feasibility of data collection, relatively unlimited spatial coverage, and availability of historical data. In the analysis, lateral acceleration and longitudinal jerk were found to be the most influential measures of curve safety performance. To sum up, the exploratory study outlined a practical approach to proactive evaluation of road curve safety: FCD data can generate useful surrogate measures of curve safety (acceleration and jerks) associated with crash history. A larger study is required to strengthen robustness of the results and provide confidence necessary for practical application. Potential use cases may include conducting interim evaluations of curve road safety treatments, or in-vehicle monitoring devices for detection of potentially unsafe manoeuvers and providing real-time feedback to drivers based on a combination of identified safety thresholds.

Słowa kluczowe

EN

floating car data; surrogate safety measure; traffic safety; road curve assessment

PL

monitorowanie danych pojazdu; środki bezpieczeństwa; bezpieczeństwo na drodze; ocena łuku drogowego

• Wydawca: Warsaw University of Technology, Faculty of Transport
• Czasopismo: Archives of Transport
• Rocznik: 2019
• Tom: Vol. 50, iss. 2
• Strony: 7--15
• Opis fizyczny: Bibliogr. 43, fot., wykr.

Twórcy

autor

Ambros Jiří

• CDV – Transport Research Centre, Brno, Czech Republic

autor

Altmann Jarosław

• Princip a.s., Prague, Czech Republic

autor

Jurewicz Chris

• Transport Accident Commission, Geelong, Australia

autor

Chevalier Anna

• Australian Road Research Board, Ultimo, Australia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019)