EFFECTS OF INTERMIXING OF BIAS, BIAS BELTED, AND RADIAL PLY PASSENGER TIRES OF VEHICLE DYNAMICS AND DRIVER/VEHICLE RESPONSES

This report describes a field test program aimed at quantitatively determining the changes in vehicle dynamics and driver response characteristics when radial, bias belted, bias ply, and lower pressure radial tire sets are intermixed on the front and rear of passenger cars. The driving tasks included highway lane tracking in the presence of simulated crosswind disturbances, transient tasks such as normal and emergency lane changes, and limit of control tasks such as a high-speed slalom. The results indicated that radial fronts with belted rears produced the greatest reduction in base vehicle understeer. Both this and a configuration with radial fronts and lower pressure radial rears were tested for time delay margins.

• Corporate Authors:

  Systems Technology, Incorporated

  13766 South Hawthorne Boulevard
  Hawthorne, CA  United States  90250

  National Highway Traffic Safety Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Klein, R H
  • Humes, R W
• Publication Date: 1975-8

Media Info

• Pagination: 86 p.

Subject/Index Terms

• TRT Terms: Automated vehicle control; Drivers; Field tests; Human machine systems; Mixing; Passenger vehicles; Performance tests; Radial ply tires; Reaction time; Road tests; Statistical bias; Steering; Tire treads; Tires; Vehicle dynamics
• Uncontrolled Terms: Driver reaction
• Old TRIS Terms: Radial tires; Response
• Subject Areas: Geotechnology; Highways; Materials; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00092490
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: STI-TR-1060-1 Final Rpt., DOT-HS-801-702
• Contract Numbers: DOT-HS-5-01080
• Files: NTIS, TRIS, USDOT
• Created Date: Nov 5 1976 12:00AM