Every motor vehicle and combination of vehicles, at all times and under all conditions of loading, upon application of the service brakes, shall be capable of:

1. (1) Developing a braking force that is not less than the percentage of its gross weight tabulated herein for its classification,
2. (2) Decelerating to a stop from not more than twenty miles per hour at not less than the feet per second per second tabulated herein for its classification, and

3. (3) Stopping from a speed of twenty miles per hour in not more than the distance tabulated herein for its classification, 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.

   				Brake
   				system
   				application
   		Braking		and
   		force		braking
   		as a	Deceler-	distance
   		percent-	ation in	in feet
   		age of gross	feet per	from an
   		vehicle or	second	initial
   Classification		combination	per	speed of
   of vehicles		weight	second	20 m.p.h.
   A	Passenger vehicles witha seating capacity of10 people or lessincluding driver, nothaving a manufacturer'sgross vehicle weightrating . . . .	52.8%	17	25
   B-1	All motorcycles andmotor-driven cycles . . . .	43.5%	14	30
   B-2	Single unit vehicleswith a manufacturer'sgross vehicle weightrating of 10,000pounds or less . . . .	43.5%	14	30
   C-1	Single unit vehicleswith a manufacturer'sgross weight rating ofmore than 10,000pounds . . . .	43.5%	14	40
   C-2	Combinations of atwo-axle towing vehicleand a trailer with agross trailer weight of3,000 pounds or less . . . .	43.5%	14	40
   C-3	Buses, regardless of thenumber of axles, nothaving a manufacturer'sgross weight rating . . . .	43.5%	14	40
   C-4	All combinations ofvehicles in driveaway-towaway operations . . . .	43.5%	14	40
   D	All other vehicles andcombinations ofvehicles . . . .	43.5%	14	50

[ 1963 c 154 s 22.]

Notes:

Effective date—1963 c 154: See note following RCW 46.37.010.