Washington Revised Code Title 46. Motor Vehicles § 46.37.528. Motorcycles and motor-driven cycles--Performance ability of brakes

(1) Developing a braking force that is not less than forty-three and one-half percent of its gross weight;

(2) Decelerating to a stop from not more than twenty miles per hour at not less than fourteen feet per second per second; and

(3) Stopping from a speed of twenty miles per hour in not more than thirty feet, such distance to be measured from the point at which movement of the service brake pedal or control begins.

Tests for deceleration and stopping distance shall be made on a substantially level (not to exceed plus or minus one percent grade), dry, smooth, hard surface that is free from loose material.