Development of Rear Pre-Crash Safety System for Rear-End Collisions

Pre-crash safety systems using radar detecting technology have been commercialized in the market. While the primary focus of these systems have been for frontal collisions, rear-end collisions actually have a higher proportion of the traffic accident injuries in Japan. In this paper, a new pre-crash safety system for rear-end collisions is explained. It was developed to help alert drivers of vehicles approaching from behind, and also to reduce whiplash injury. This new system uses a millimeter-wave radar installed in the rear bumper to detect a vehicle approaching closely from behind. If it judged that there is high risk of collision, the hazard lights would flash to warn the driver of the approaching vehicle and the headrests are automatically moved forward. Sensors in the headrests detect the location of the occupants’ head and shifts the headrests to a closer position to the head before the collision occurs, thereby reducing the risk of whiplash injury. This paper shows the effectiveness of the pre-crash hazard light and pre-crash headrest technology.

• Record URL:
  http://www-nrd.nhtsa.dot.gov/departments/esv/20th/
• Corporate Authors:

  National Highway Traffic Safety Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Matsubayashi, Kiyoka
  • Yamad, Yukinori
  • Iyoda, Motomi
  • Koike, Shin
  • Kawasaki, Tomoya
  • Tokuda, Masanori
• Conference:
  • 20th International Technical Conference on the Enhanced Safety of Vehicles (ESV)
  • Location: Lyon , France
  • Date: 2007-6-18 to 2007-6-21
• Publication Date: 2007

Language

• English

Media Info

• Media Type: Web
• Features: Figures; Photos; References; Tables;
• Pagination: 5p
• Monograph Title: 20th International Technical Conference on the Enhanced Safety of Vehicles (ESV)

Subject/Index Terms

• TRT Terms: Crash injuries; Fatalities; Headrests; In vehicle sensors; Occupant protection devices; Rear end crashes; Whiplash
• Geographic Terms: Japan
• Subject Areas: Highways; Safety and Human Factors; Vehicles and Equipment; I84: Personal Injuries; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 01574721
• Record Type: Publication
• Report/Paper Numbers: 07-0146
• Files: TRIS, ATRI, USDOT
• Created Date: Aug 28 2015 1:57PM