In-Vehicle Dynamic Curve-Speed Warnings at High-Risk Rural Curves
Lane-departure crashes at horizontal curves represent a significant portion of fatal crashes on rural Minnesota roads. Because of this, solutions are needed to aid drivers in identifying upcoming curves and inform them of a safe speed at which they should navigate the curve. One method for achieving this that avoids costly infrastructure-based methods is to use in-vehicle technology to display dynamic curve-speed warnings to the driver. Such a system would consist of a device located in the vehicle capable of providing a visual and auditory warning to the driver when approaching a potentially hazardous curve at an unsafe speed. This project seeks to determine the feasibility of in-vehicle dynamic curve-speed warnings as deployed on a smartphone app. The system was designed to maximize safety and efficacy to ensure that system warnings are appropriate, timely, and nondistracting to the driver. The developed system was designed and implemented based on the results of a literature survey and a usability study. The developed system was evaluated by 24 Minnesota drivers in a controlled pilot study at the Minnesota Highway Safety and Research Center in St. Cloud, Minnesota. The results of the pilot study showed that, overall, the pilot study participants liked the system and found it useful. Analysis of quantitative driver behavior metrics showed that when receiving appropriately placed warnings, drivers navigated horizontal curves 8-10% slower than when not using the system. These findings show that such a curve-speed warning system would be useful, effective, and safe for Minnesota drivers.
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Corporate Authors:
University of Minnesota, Minneapolis
Department of Mechanical Engineering
111 Church Street, SE
Minneapolis, MN United States 55455Minnesota Department of Transportation
Minnesota Local Road Research Board
Research Services & Library, 395 John Ireland Boulevard, MS 330
St. Paul, MN United States 55155-1899 -
Authors:
- Davis, Brian
- Morris, Nichole
- Achtemeier, Jacob
- Patzer, Brady
- Publication Date: 2018-3
Language
- English
Media Info
- Media Type: Digital/other
- Edition: Final Report
- Features: Appendices; Figures; Photos; References; Tables;
- Pagination: 81p
Subject/Index Terms
- TRT Terms: Driver information systems; High risk locations; Highway curves; Highway safety; Low volume roads; Rural transportation; Speed; Speed control; Warning devices
- Geographic Terms: Saint Cloud (Minnesota)
- Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; Safety and Human Factors;
Filing Info
- Accession Number: 01667113
- Record Type: Publication
- Report/Paper Numbers: MN/RC 2018-12
- Contract Numbers: (c) 99008 (wo) 231
- Files: NTL, TRIS, ATRI, STATEDOT
- Created Date: Apr 25 2018 11:14AM