AUTOMATION OF THE SCHONFELD METHOD OF HIGHWAY SURFACE TEXTURE CODE ASSIGNMENT. VOLUME V. SPECIFICATION OF A SINGLE-LINE INSTRUMENT FOR MEASURING HIGHWAY SURFACE TEXTURE
The Phase III effort of this research project was directed toward the specification of a practical single-line instrument for the real-time measurement of surface texture from aboard a moving vehicle. Existing instrument concepts were investigated and evaluated, but proved to be inadequate for use aboard a vehicle moving at typical highway speeds. A new instrument concept was devised that showed the potential for use in the moving vehicle application. This concept involves projection of a very short duration, slit of light onto the road surface and detection of the resultant illuminated profile of surface texture with a sensitive vidicon television camera. Analytical and experimental evaluation of this concept verified its feasibility. The preliminary design, performance specifications, and implementation plan for a prototype of this instrument were prepared.
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Supplemental Notes:
- See also Volume 4 dated Apr 76, PB-259 553.
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Corporate Authors:
ENSCO, Incorporated
5400 Port Royal Road
Springfield, VA United States 22151Maryland State Highway Administration
2323 West Joppa Road
Brooklandville, MD United States 21022Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC United States 20590 -
Authors:
- Cantor, C
- Publication Date: 1976-12
Media Info
- Pagination: 80 p.
Subject/Index Terms
- TRT Terms: Coding systems; Design; Measuring instruments; Pavements; Performance tests; Recording; Roughness; Skid resistance; Specifications; Television cameras; Texture
- Uncontrolled Terms: Profiles
- Old TRIS Terms: Coding; Digital recording; Vidicons
- Subject Areas: Design; Highways; Pavements;
Filing Info
- Accession Number: 00175997
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: FHWA/MD/R-76/8E
- Files: NTIS, USDOT, STATEDOT
- Created Date: Jul 19 2002 12:00AM