THE CLASSIFICATION OF TRAFFIC FOR PAVEMENT DESIGN PURPOSES
RECENTLY IT HAS BEEN RECOGNIZED THAT THE AXLE-LOAD SPECTRUM OF COMMERCIAL TRAFFIC IS OF MAJOR IMPORTANCE FOR STRUCTURAL DESIGN OF NEW PAVEMENTS. EFFORT IS BEING DIRECTED TOWARDS THE PRODUCTION OF A CAPACITOR-TYPE PAD WHICH CAN BE PLACED ON THE HIGHWAY SURFACE. THE OBJECTIVE OF RESEARCH IN THIS FIELD IN BRITAIN HAS BEEN TO DETERMINE BY LIMITED SURVEYS MEAN SPECTRA FOR COMMERCIAL AXLES APPROPRIATE TO DIFFERENT CLASSES OF ROAD, E.G. INDUSTRIAL MOTORWAYS AND MAJOR TRUNK ROADS, RURAL MAJOR ROADS, SECONDARY RURAL ROADS, AND ROADS IN RESIDENTIAL AREAS. A SUMMARY OF RESULTS TO DATE IS GIVEN. TYPICAL SPECTRA ARE CONVERTED TO AN EQUIVALENT NUMBER OF STANDARD 8200 KG (18,000 LB) AXLES PER 100 COMMERCIAL AXLES, USING THE A.A.S.H.O. EQUIVALENCE FACTORS. IN USING THIS APPROACH, TO EVALUATE FROM THE COMMERCIAL TRAFFIC FLOW THE CUMULATIVE NUMBER OF EQUIVALENT 8200 KG (18,000 LB) AXLES CARRIED BY A PARTICULAR HIGHWAY LANE DURING THE DESIGN LIFE OF A PAVEMENT, TWO OTHER PIECES OF INFORMATION ARE REQUIRED: (1) THE AVERAGE NUMBER OF AXLES PER COMMERCIAL VEHICLE; AND (2) THE DISTRIBUTION OF COMMERCIAL TRAFFIC BETWEEN THE HIGHWAY LANES. STUDIES OF THESE TWO FACTORS HAVE RECENTLY BEEN MADE IN BRITAIN AND THE RESULTS ARE SUMMARIZED.
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Authors:
- Currer, E W
- Thompson, P D
- Conference:
- Publication Date: 1972-9
Media Info
- Features: Figures; References; Tables;
- Pagination: 10 p.
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Serial:
- Volume: 1
Subject/Index Terms
- TRT Terms: Axle load force; Commercial vehicles; Pavement design
- Subject Areas: Highways; Pavements;
Filing Info
- Accession Number: 00206054
- Record Type: Publication
- Files: TRIS
- Created Date: May 15 1973 12:00AM