BETTER TRAFFIC WITH BETTER ROAD SURFACES
BIBLIOGRAPHICAL STUDY IS MADE ABOUT THE RELATIONSHIP BETWEEN TRAFFIC SAFETY AND THE PAVEMENT SURFACE CHARACTERISTICS CONCERNING FRICTION, REFLECTIVITY, AND REGULARITY. THE FOLLOWING SUBJECTS ARE APPROACHED: (1) SKIDDING AND ACCIDENTS: RELATIONSHIP BETWEEN THE ACCIDENT RATE AND THE FRICTION COEFFICIENT. (2) FRICTION COEFFICIENT: DEFINITION AND EQUIPMENT FOR MEASUREMENTS. (3) SURFACE TEXTURE: MACRO AND MICRORUGOSITY; RELATIONSHIP BETWEEN THE SPEED AND THE FRICTION COEFFICIENT. (4) THE WEARING COURSE COMPONENTS: ASPHALT PAVEMENTS OPEN AND CLOSED; CONCRETE PAVEMENTS; AND THE IMPORTANCE OF RESISTANCE AGAINST POLISHING. (5) THE SUPERFICIAL HUMIDITY: THE DECREASE OF THE FRICTION COEFFICIENT WITH THE WATER ON THE SURFACE. (6) THE INFLUENCE OF THE TIRE AND THE VEHICLE: WORN TIRE AND BEADED TIRE; VEHICLE BRAKE SYSTEM. (7) THE REFLECTIVITY OF THE ROAD SURFACE: THE RELATIONSHIP BETWEEN THE REFLECTIVITY AND THE FRICTION COEFFICIENT; SURFACE OF LIGHT COLOR. (8) UNIFORMITY OF THE ROAD SURFACE. (9) CONSTRUCTION OF A PAVEMENT WITH A SAFE SURFACE: SUPERPOSITION OF COARSE AGGREGATE; SUPERFICIAL TREATMENT AND SEVERAL SPECIFICATIONS. (10) MAINTENANCE OF THE SAFE SURFACE: THE SUPERFICIAL TREATMENT; SLURRY SEAL; AND CONCRETE SURFACES' TREATMENT. THE CONCLUSION IS THAT SPECIAL ATTENTION SHOULD BE GIVEN TO THE QUALITY OF THE COMPONENTS OF THE ROAD SURFACING, TO OBTAIN AND MAINTAIN THE RUGOSITY, THE DIFFUSE REFLECTIVITY AND THE UNIFORMITY NEEDED FOR THE APPROPRIATE SAFETY OF THE USER. /RRI/
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Corporate Authors:
Road Federal Institute /Brazil
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Authors:
- Larsen, J
- Publication Date: 1970
Subject/Index Terms
- TRT Terms: Asphalt pavements; Brakes; Coarse aggregates; Concrete pavements; Crash rates; Crashes; Friction; Humidity; Maintenance; Measurement; Paving; Polished aggregates; Reflectivity; Skidding; Slurry seals; Speed; Standardization; Surface course (Pavements); Texture; Tires; Traffic safety; Vehicles; Wearing course (Pavements)
- Old TRIS Terms: Resistance
- Subject Areas: Highways; Maintenance and Preservation; Safety and Human Factors; Vehicles and Equipment;
Filing Info
- Accession Number: 00221292
- Record Type: Publication
- Source Agency: Road Research Institute /Brazil
- Files: TRIS
- Created Date: May 16 1971 12:00AM