00677732

Component

http://onlinepubs.trb.org...trr/1994/1471/1471-001.pdf

https://scholar.google.co...oltz&publication_year=1994

The safety of wet pavements has become a major concern because of the growing need to drain wide pavements. Research on the relationship between drainage design, vehicle operation, and safety, with a particular focus on crossfall and drainage characteristics of wide pavements, is reported. Following an introduction to the subject, the problem of draining wide pavements and the associated safety issues are discussed. The safety implications of longer drainage paths across four or more lanes of high-speed freeway are described in terms of the risk of loss of vehicle control due to skidding or hydroplaning. Models of skidding, hydroplaning, and water depth on pavement are reviewed. Existing practices and potential solutions for effective drainage of wide pavements are discussed. These include the appropriate crossfall design and the effective drainage at the edge of the pavement. A design methodology is advanced for (a) estimating water depth under various conditions at critical locations on highway pavements and shoulders, (b) establishing drain inlet locations, and (c) assessing whether estimated water accumulation can lead to significant loss of control from skidding and hydroplaning. An example application and sample results are discussed. Finally, conclusions on drainage design methodology and crossfall standards are presented.

This paper appears in Transportation Research Record No. 1471, Recent Research on Hydraulics and Hydrology. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01396802

English

p. 1-9

1994

Transportation Research Record

0309061040

Figures (4) ; References (14) ; Tables (5)

Design methods; Design standards; Drainage; Drains; Edge drains; Freeways; Hydroplaning; Location; Loss of control; Multilane highways; Pavements; Safety; Skidding; Superelevation; Wet weather

Crossfall; Wet pavements

Design; Highways; Hydraulics and Hydrology; Pavements; Safety and Human Factors; I26: Water Run-off - Freeze-thaw

TRIS, TRB

May 22 1995 12:00AM

• CORRELATION OF PAVEMENT SURFACE TEXTURE TO HYDRAULIC ROUGHNESS
• DEVELOPING EROSION CONTROL PLANS FOR HIGHWAY CONSTRUCTION
• DEVELOPMENT OF REGIONALIZED CURVES FOR DRAINAGE AREA VERSUS SEDIMENT BASIN SIZE
• FLOOD ANALYSIS IN DUPAGE COUNTY USING HYDROLOGICAL SIMULATION PROGRAM--FORTRAN MODEL
• HYDRAULICS OF SAFETY END SECTIONS FOR HIGHWAY CULVERTS
• HYDROLOGIC ENGINEERING CENTER MODELS FOR URBAN HYDROLOGIC ANALYSIS
• IMPROVEMENTS IN CURB-OPENING AND GRATE INLET EFFICIENCY
• SCOUR AROUND WIDE PIERS IN SHALLOW WATER
• SMALL URBAN WATERSHED USE OF HYDROLOGIC PROCEDURES
• URBAN HYDROLOGY DESIGN USING SOIL CONSERVATION SERVICE TR-55 AND TR-20 MODELS