1. Report No.

DOT HS 809 893

2. Government Accession No.

3. Recipient’s Catalog No.

4. Title and Subtitle

 Traction Control and Validation Test

5. Report Date

July 2005

6. Performing Organization Code

7. Author(s)
Richard W. Radlinski

8. Performing Organization Report No.

9. Performing Organization Name and Address

Radlinski & Associates, Inc.
3143 County Road 154
East Liberty, OH 43319

10. Work Unit No. (TRAIS)

11. Contract or Grant No.

DTNH22-00-P-07177

12. Sponsoring Agency Name and Address

National Highway Traffic Safety Administration
400 Seventh Street, S.W.
Washington, DC 20590

13. Type of Report and Period Covered

Final

14. Sponsoring Agency Code

15. Supplementary Notes

16. Abstract

This report provides a review of automatic traction control systems (ATC) used on heavy commercial vehicles and shows how they are integrated with antilock brake systems and electronic engine controls in such a way as to prevent loss of stability and control caused by excessive drive-axle wheel slip. It discusses the development of a vehicle test procedure for evaluating ATC performance and describes full-scale vehicle testing that was performed on low friction road surfaces to evaluate the test procedure. Research described in this report was performed in response to recommendations made to the National Highway Traffic Safety Administration (NHTSA) by the National Transportation Safety Board (NTSB) in their accident investigation report number PB98-916203.

17. Key Words

Automatic traction control, antilock brakes, jackknife, truck brakes, loss of control accidents

18. Distribution Statement

  Document is available to the public through the
National Technical Information Service, Springfield, Virginia 22161

19. Security Classif. (Of this report)
Unclassified

20. Security Classif. (Of this page)
Unclassified

21. No. of Pages
51

22. Price