Wet weather exposure measures

Harwood, D. W.; Blackburn, R. R.; Kulakowski, B. T.; Kibler, D. F.

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Wet weather exposure measures

1988-02-01
By Harwood, D. W. ; Blackburn, R. R. ; Kulakowski, B. T.

File Language:

English

Details

Creators:

Harwood, D. W. ; Blackburn, R. R. ; Kulakowski, B. T. ; Kibler, D. F.
Corporate Creators:

Midwest Research Institute (Kansas City, Mo.)
Corporate Contributors:

United States. Federal Highway Administration. Office of Engineering & Highway Operations Research and Development
Subject/TRT Terms:
Publication/ Report Number:

FHWA-RD-87-105
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final report
Contracting Officer:

Hegmon, R. R.
Corporate Publisher:

Turner-Fairbank Highway Research Center
Abstract:

Accident surveillance programs require a measure of wet-pavement exposure to determine whether the wet-pavement accident rates of particular highway sections are higher or lower than expected. This research program used the results of laboratory and field tests, together with available weather data to construct a model for estimating the percentage of time a pavement would be wet. The laboratory and field testing program addressed (1) the minimum level of pavement surface wetness that substantially reduces tire~pavement friction and (2) the time required for a pavement to dry following rainfall. A computer model, known as the WETTIME model, was developed in the research to estimate the monthly and annual hours of wet-pavement exposure. The model can be used to estimate wet-pavement exposure in the vicinity of any first-order weather station from data that can be obtained from the National Climatic Data Center in Asheville, North Carolina. Procedures were also developed to use the output of the WETTIME model to prepare isoexposure contour maps for enttire States or regions.
Format:

PDF
Funding:

DTFH61-84-C-00109
Download URL:

https://rosap.ntl.bts.gov/view/dot/897/dot_897_DS1.pdf
File Type:

[PDF - 3.61 MB]
Collection(s):

Federal Highway Administration
Main Document Checksum:

urn:sha-512:422c3f7e1976693f4605fc73015e2e4bad842726d04d3728fe5409b1b0d32060c000fb08cffdce88e2c931b20ed5ad1ce8aa4b4f63d98703b210d4b122d98ef3

File Language:

English

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