TECHNOLOGIES OF NISSAN'S AUTOMATED HIGHWAY SYSTEM (AHS) TEST VEHICLE

The first public trials in Japan of an Automated Highway System (AHS) were performed in November 1995 on a test track at the Public Works Research Institute of the Ministry of Construction. Test vehicles from Nissan which participated in these public trials had two advanced control systems that enable "platooning" (two cars traveling in line, with the following car controlled by the lead car). The first system is a longitudinal control system that ensures that each vehicle runs at a specified velocity and vehicle spacing; the second is a lateral control system that ensures that the vehicle runs along a specified track. Longitudinal control adjusts the brakes and throttle on the basis of speed instructions from a leakage coaxial cable (LCX) arranged along the road and the vehicle spacing as determined by laser radar. Lateral control adjusts the steering on the basis of vehicle position information obtained from magnetic nail sensors. When vehicles are platooning, these systems are designed to improve reliability by exchanging information between vehicles by vehicle-to-vehicle communications. If by some mischance a sensor should fail, these systems maintain safety by providing a backup of road maps and image information. Each vehicle also has an information supply system provided with a head-up display (HUD), a CRT monitor, and an aural information system, to inform the driver and passengers of the running state of the vehicle and the road state.

• Supplemental Notes:
  • Full conference proceedings available only on CD.
• Corporate Authors:

  ITS America

  1100 17th Street, NW, 12th Floor
  Washington, DC  United States  20036
• Authors:
  • Inoue, H
  • Mouri, H
  • Sato, H
  • Asaoka, A
  • Ueda, S
• Conference:
  • Intelligent Transportation: Realizing the Future. Abstracts of the Third World Congress on Intelligent Transport Systems
  • Location: Orlando, Florida
  • Date: 1996-10-14 to 1996-10-18
• Publication Date: 1996

Language

• English

Media Info

• Pagination: n.p.

Subject/Index Terms

• TRT Terms: Automated highway systems; Automated vehicle control; Automatic steering control; Coaxial cables; Driver information systems; Intelligent transportation systems; Leakage; Longitudinal control; Technological innovations; Test vehicles; Traffic platooning
• Geographic Terms: Japan
• Old TRIS Terms: Advanced systems; Vehicular communications
• Subject Areas: Highways; Operations and Traffic Management; Vehicles and Equipment; I95: Vehicle Inspection;

Filing Info

• Accession Number: 00738784
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 29 1997 12:00AM