FURTHER ON-THE-ROAD TESTS OF DRIVER INTERFACES: EXAMINATION OF A ROUTE GUIDANCE SYSTEM AND A CAR PHONE. FINAL REPORT

In this experiment 8 drivers (4 younger, 4 older) drove a 19 turn, 35-minute route. The route included sections through residential neighborhoods, on city streets, and on expressways. They were guided by an experimental navigation system that provided turn-by-turn instructions via a display mounted on the instrument panel. During the trip each driver was asked to dial a phone number and participate in a simulated phone conversation. At the end of the trip drivers were asked to rate the difficulty of a variety of driver-information-system-related tasks. The instrumented car recorded lateral position in the lane, speed, throttle position, steering wheel angle, eye fixation location, and other measures. Typical lateral standard deviations were 0.5 ft and decreased with speed. Speed standard deviations were slightly in excess of 1 mph. Using the phone and navigation systems resulted in slight increases in the standard deviation of throttle position and the standard deviation of steering wheel angle. There were 8 navigation errors in this experiment, comparable to the 25 errors from 30 drivers in a previous experiment, a fairly low number. This experiment demonstrated that repeatable and reliable measures of driver performance and behavior could be obtained using the test protocol employed in this experiment.

• Corporate Authors:

  University of Michigan Transportation Research Institute

  2901 Baxter Road
  Ann Arbor, MI  United States  48109-2150

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  National Highway Traffic Safety Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Green, P
  • Hoekstra, E
  • Williams, M
• Publication Date: 1993-11

Language

• English

Media Info

• Pagination: 96 p.

Subject/Index Terms

• TRT Terms: Behavior; Cellular telephones; Driver information systems; Driver performance; Driver vehicle interfaces; Drivers; Ergonomics; Human factors; Human subject testing; Instrument panels; Intelligent transportation systems; Navigation; Personnel performance; Route guidance
• Subject Areas: Highways; Operations and Traffic Management; Safety and Human Factors; Vehicles and Equipment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 00675263
• Record Type: Publication
• Source Agency: University of Michigan Transportation Research Institute
• Report/Paper Numbers: UMTRI-93-35
• Contract Numbers: DTFH61-89-C-00044
• Files: TRIS, USDOT
• Created Date: Mar 13 1995 12:00AM