High-Luminance Road Surfaces,
Abstract
The road surface is an important factor for the visibility conditions of night driving. The most important characteristics are the structure and the luminosity of the surface. These characteristics have been proven to have major significance for visual guidance, recognition of obstacles, and glare. In order to obtain maximum effect, the luminosity of the road surface must be produced by the particles protruding up from the surface, i.e. the coarsest portion of the aggregates. The usefulness is determined by the durability, the resistance of weathering, and the degree of luminosity. Quartzites have the best wear properties and anorthosites are lighter in color. The field tests have confirmed the positive effect of a light-colored road surface or a light-colored shoulder on the recognition of obstacles on the road. The tests have also shown satisfactory wear characteristics of those light-colored aggregates that had been selected on the basis of laboratory testing. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1980
- Accession Number
- ADA095908
Entities
People
- Sigmund Doerum
- Torkild Thurmann-moe
Organizations
- Cold Regions Research and Engineering Laboratory