This paper presents a method to evaluate the slipperiness of fioors and pavements from a VieWpoint of safety on riding a bicycle , which is based on the relation between the evaluating scales of slipperiness and Slipperiness . index (C. S. R − BIKE), measured with developed Slip meter reported in part2 . The outl e of this study is as follows. The first , the evaluating scales of safety of SlipPeriness Were made by sensory test by means of 且oors and bicycle . Then , the C . S. R − BIKE of floors was m6asured with the developed slip meter , Based on the relation between the evaluating scales and the C , S, R − BIKE, evaluat 童 oll index and evaluation method of Slipperiness of floors and pavements from a VieWpoint of safety on dd g bieycle was presented . Keywords ' Bicycfe, Siip ρetiness of fioors a η ゴ P ∂ μθ叨 θη 齲 Safety . Evaluation method . Evaluation index