A Technique for the Accurate Measurement of Low Values of Rolling Resistance

Abstract

This paper describes a method of measuring rolling resistance for vehicles with relatively high mass and low rolling resistance. The technique, in which the deceleration of a test vehicle is measured, overcomes some of the problems of other methods and allows a wide variety of surfaces to be used. Computerization is used for automatic timing and data processing. The implications of surface flatness and instrumental accuracy are discussed and the analysis of an experimental investigation shows that accuracies to within 3 per cent are possible.