| Title | Effectiveness of Alternative Skid Reduction Measures: Volume I: Evaluation of Accident Rate-Skid Number Relationships |
|---|---|
| Record ID | 57475 |
| Personal Name Creator |
Blackburn, R. R.; Harwood, D.W.; St. John, A. D.; Sharp, M.C. |
| Corporate Creator | Midwest Research Institute |
| Corporate Contributor |
United States. Department of Transportation. Federal Highway Administration. Offices of Research and Development |
| Publisher | United States. Department of Transportation. Federal Highway Administration. Offices of Research and Development |
| Publication Date | 19781100 |
| Language | English |
| Abstract | Relationships were developed between wet-pavement accident rate and skid number for various combinations of highway type, area type (urban/rural) and traffic volume. Accident rate, skid number and related data were collected for two one-year periods on 428 highway sections located in 16 states. An extensive statistical analysis of the data was conducted using matched-pair comparisons regression analysis and analysis of covariance. The analyses found a small but statistically significant, influence of skid number on wet-pavement accident rate. A linear relationship with skid number explained the variation in wet-Pavement accident rate as well, or better, than any simple logarithmic or polynomial function. The differences in the slope of this linear relationship for various highway type-area type-traffic volume combinations were not statistically significant, so a single common slope was used. It was found that the slope of the wet-pavement accident rate-skid number relationship is sensitive to the dry-pavement accident rate. This sensitivity was quantified to further explain the relationship between wet-pavement accident rate and skid number. The relationships developed in this volume have been Incorporated in a computerized benefit-cost model for wet-pavement accident countermeasures. described in Volumes II and III of this report. |
| Rosap ID | dot:30102 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/30102 |
| TRT Terms | Alternatives analysis; Asphalt; Cost effectiveness; Macrotexture; Open graded aggregates; Pavement grooving; Pavements; Portland cement concrete; Prevention; Reviews; Rolling contact; Safety; Seal coats; Skid resistance; Pavement surface course; Texture; Crashes; Highways; Traffic crashes; Human factors; Security; Emergencies; Skids; Skidding |
| Geographical Coverage |
United States |
| Contract Number | DOT-FH-11-8120 |
| Report Number | FHWA-RD-79-22 |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/57000/57400/57475/effectivenessofa00blac.pdf |
| Format | |
| Database | NTL Digital Repository |