RESULTS FROM STUDIES OF HIGHWAY GROOVING AND TEXTURING AT NASA WALLOPS STATION

RESULTS OF STUDIES OF THE SKID RESISTANCE OBTAINED ON 30 DIFFERENT PAVEMENT SURFACES INSTALLED AT THE NASA WALLOPS STATION AIRFIELD ARE DISCUSSED. PRESENTED ARE TRANSIENT PEAK, STEADY-STATE PEAK, AND LOCKED-WHEEL BRAKING COEFFICIENTS OF FRICTION FOR ASTM RIB-TREAD AND ASTM BALD-TREAD TIRES AND FOR NEW AND WORN PRODUCTION TIRES OBTAINED UNDER DRY, WET, AND FLOODED PAVEMENT CONDITIONS AT VEHICLE SPEEDS RANGING FROM 10 TO 80 MPH. RESULTS OF LIMITED VEHICLE SPIN-OUT TESTS ON A 500-FOOT-RADIUS HIGHWAY CURVE ARE ALSO INCLUDED. IT WAS FOUND THAT THE PRESENTLY USED METHOD OF MAKING LOCKED-WHEEL FRICTION MEASUREMENTS TO DETERMINE PAVEMENT SKID RESISTANCE DOES NOT NECESSARILY DENOTE THE TRUE SKID RESISTANCE OF PAVEMENTS UNDER VEHICLE ROLLING OR MANEUVERING CONDITIONS. ALSO, THE SKID RESISTANCE OF SMOOTH CLOSED-TEXTURE PAVEMENTS TENDS TO BE DANGEROUSLY LOW UNDER WET CONDITIONS WHEN VEHICLES ARE OPERATED AT HIGH SPEED WITH WORN TIRES. HOWEVER, THE MORE OPEN TEXTURED PAVEMENTS AS WELL AS THE TRANSVERSE-AND LONGITUDINAL-GROOVE PAVEMENTS EXHIBITED ADEQUATE SKID RESISTANCE FOR THE VEHICLE SPEED AND TIRE CONDITIONS INVESTIGATED.

• Supplemental Notes:
  • pp 425-464, 26 FIG, 4 TAB, 9 REF
• Corporate Authors:

  Pavement Grooving and Traction Studies

  ,    
• Authors:
  • Horne, W B
• Publication Date: 1968-11-18

Subject/Index Terms

• TRT Terms: Braking; Coefficient of friction; Friction tests; Highways; Pavement grooving; Pavements; Skid resistance; Skidding; Surface course (Pavements); Texture; Tires
• Subject Areas: Highways; Pavements; Vehicles and Equipment;

Filing Info

• Accession Number: 00207046
• Record Type: Publication
• Source Agency: Nat Safety Council Safety Res Info Serv
• Files: TRIS
• Created Date: Jan 19 1970 12:00AM