Skid Resistance

LABORATORY 4 ROAD SKIN RESISTANCE

1.0 INTRODUCTION

One of the surface requirements for road pavement is that it should posses adequate skid resistance. Skid resistance is important for road safety. With skid resistance it allows for better ‘grip’ between tire and road surfaces. Most road surfaces have adequate skid resistance in the dry as compared during wet condition. The presence of water between tire and road surface reduce the contact are which are needed to create the ‘grip’. This method describes the procedure for determining the frictional properties (skid resistance value) of a pavement surface using a Portable Skid Resistance Tester. The instrument, which gives direct reading, gives a measure of the friction between a skidding tire and dry/wet road surface in low speed situation (