RELATIONSHIP BETWEEN SKID RESISTANCE NUMBERS …

[Pages:266]RELATIONSHIP BETWEEN SKID RESISTANCE NUMBERS MEASURED WITH RIBBED AND SMOOTH TIRE AND WET-ACCIDENT LOCATIONS

FINAL REPORT

State Job Number 134323

Prepared For: Ohio Department of Transportation Office of Research and Development

In Cooperation With: U.S. Department of Transportation

Federal Highway Administration

November 2008

1. Report No.

2. Government Accession No.

FHWA/OH-2008/11

4. Title and Subtitle

Relationship Between Skid Resistance Numbers Measured With Ribbed and Smooth Tire and Wet Accident Locations

7. Author(s)

Roger M. Larson, Todd E. Hoerner, Kurt D. Smith, and Angela S. Wolters

9. Performing Organization Name and Address

Applied Pavement Technology, Inc. 115 W. Main Street, Suite 400 Urbana, IL 61801

12. Sponsoring Agency Name and Address

Ohio Department of Transportation 1980 West Broad Street Columbus, Ohio 43223

Technical Report Documentation Page 3. Recipient's Catalog No.

5. Report Date

November 2008

6. Performing Organization Code

8. Performing Organization Report No.

10. Work Unit No. (TRAIS)

11. Contract or Grant No.

134323

13. Type of Report and Period Covered

Final Report January 2007 - November 2008

14. Sponsoring Agency Code

15. Supplementary Notes

ODOT Technical Liaisons: Andrew Williams, Brian Schleppi, Roger Green, Thad Tibbles

16. Abstract

Due to the recent strategic initiative adopted by the Ohio Department of Transportation (ODOT) to reduce highway crashes, there is a current need to determine if surface friction testing results can be correlated to wet weather crash data in Ohio. The establishment of such correlations would allow ODOT to develop a proactive wet-pavement accident reduction program that would effectively predict locations where wet-pavement crashes may likely occur. Under this study, research was conducted to determine if surface characteristic measurements can be correlated to wet-weather accidents and guidance was provided on the identification of desirable or target friction numbers as a function of site categories and friction demand. A comprehensive literature review was first conducted on pavement surface characteristics, including a review of international research activities. This was followed by a field testing program to evaluate smooth- and ribbed-tire surface friction, as well as pavement macrotexture and roughness, at 90 locations throughout the state. The 90 sections that were selected represent three different site categories: signalized intersections, unsignalized intersections, and congested freeways. These site categories were considered to have the most potential to reduce rearend crashes. The surface characteristics data from the 90 pavement sections were then analyzed with regards to crash data using both trend analysis and regression modeling techniques. Based on the findings from the field testing program and the available information in the literature, preliminary recommendations were developed for ODOT to consider in its quest for improving the safety of its roadway network.

The main body of this report includes an abbreviated summary of the extensive literature search of both U.S. and international studies, a detailed description of the field testing program, a summary of the data analysis procedures, a summary of the findings and conclusions, and a summary of the final recommendations for implementation. Three appendices are also included as part of the final report. Appendix A presents a comprehensive Annotated Bibliography, Appendix B provides a comprehensive synthesis on pavement surface characteristics (surface texture, friction, noise and roughness), and Appendix C presents data plots that were generated as part of the data analyses.

17. Key Words

18. Distribution Statement

skid resistance, friction testing, ribbed tire, smooth tire,

No restrictions. This document is available to the

macrotexture, roughness, wet-pavement crash data, site categories, friction demand, intervention levels,

public through the National Technical Information Service, Springfield, Virginia 22161.

investigatory levels, proactive wet-pavement accident reduction program, mix design, aggregate quality

19. Security Classifi cation (of thi s report)

20. Security Classification (of this page)

21. No. of Pages

22. Price

Unclassified

Unclassified

260

Form DOT F 1700.7 (8-72)

Reproduction of completed page authorized

RELATIONSHIP BETWEEN SKID RESISTANCE NUMBERS MEASURED WITH RIBBED AND SMOOTH TIRE AND WET-ACCIDENT LOCATIONS

Prepared By: Roger M. Larson, P.E. Todd E. Hoerner, P.E.

Kurt D. Smith, P.E. Angela S. Wolters, P.E.

Research Conducted By: Applied Pavement Technology, Inc.

115 W. Main Street, Suite 400 Urbana, Illinois 61801

Performed Under: State Job Number 134323 Agreement Number 21387

Sponsored By: Ohio Department of Transportation

Prepared in cooperation with the Ohio Department of Transportation and the U.S. Department of Transportation, Federal Highway Administration

November 2008

 ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download