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Connected vehicle data for crash hotspots
University of Virginia.
University of Virginia.
Western Michigan University.
Western Michigan University.
2018 (English)Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

Identifying crash hotspots help traffic engineers implementing countermeasures to improve transportation system safety. However, given it typically takes 12 to 18 months to obtain crash reports, the crash hotspots based on actual crash reports might not be applicable (as the hotspot locations often change). In order to identify hotspots more timely than current practice, we have investigated the basic safety message (BSM) including equipped vehicle deceleration data at every 0.1 seconds from connected vehicles. Based on the safety pilot study data from April 2013, we proposed “extreme braking event” as a crash surrogate. The extreme braking event was defined as a longitudinal deceleration rate greater than 0.6 g (or 19.32 ft/s2). When comparison was made between the actual crash (i.e., crash rate) and the extreme braking event (i.e., event rate based on the number of equipped vehicles) at the same freeway segments in the city of Ann Arbor, the proposed extreme braking event showed high correlation (over 0.7). In addition, top 5 actual crash hotspots (about 50% of crashes out of 38 segments) were identified by using top 8 extreme braking event measures. Thus, our research indicates that the proposed extreme braking event measure has of great potential to identify crash hotspots in timely manner than the current practice based on delayed crash reports.

Place, publisher, year, edition, pages
Linköping: Statens väg- och transportforskningsinstitut, 2018.
Research subject
X RSXC
Identifiers
URN: urn:nbn:se:vti:diva-12991OAI: oai:DiVA.org:vti-12991DiVA, id: diva2:1205515
Conference
18th International Conference Road Safety on Five Continents (RS5C 2018), Jeju Island, South Korea, May 16-18, 2018
Available from: 2018-05-16 Created: 2018-05-14 Last updated: 2018-05-25Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf