(a)Every motor vehicle and combination of vehicles, at all times and under all conditions of loading, on application of the service brake, shall be capable of:
(1)Developing a braking force that is not less than the percentage of its gross weight tabulated in subsection (c) of this section for its classification;
(2)Decelerating to a stop from not more than 20 miles per hour at not less than the feet per second tabulated in subsection (c) of this section for its classification; and
(3)Stopping from a speed of 20 miles per hour in not more than the distance tabulated in subsection (c) of this section for its classification, this distance to be measured from the point at which movement of the service brake pedal or control begins.
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(a) Every motor vehicle and combination of vehicles, at all times and under all conditions of loading, on application of the service brake, shall be capable of:
(1) Developing a braking force that is not less than the percentage of its gross weight tabulated in subsection (c) of this section for its classification;
(2) Decelerating to a stop from not more than 20 miles per hour at not less than the feet per second tabulated in subsection (c) of this section for its classification; and
(3) Stopping from a speed of 20 miles per hour in not more than the distance tabulated in subsection (c) of this section for its classification, this distance to be measured from the point at which movement of the service brake pedal or control begins.
(b) Tests for deceleration and stopping distance shall be made on a substantially level (not to exceed plus or minus 1 percent grade), dry, smooth, hard surface that is free from loose material.
(c) The following table sets forth the tabulations referred to in subsection (a) of this section:
1 2 3 4
Brake system
application and
Braking force distance in
as a percentage feet from
of gross vehicle Deceleration an initial
Classification of or combination in feet per speed of 20
vehicle weight second m.p.h
A Passenger vehicles with
a seating capacity of 10
people or less including
driver, not having a
manufacturer’s gross
vehicle weight rating…… 52.8% 17 25
B–1 All motorcycles…………… 43.5% 14 30
B–2 Single unit vehicles
With a manufacturer’s
gross vehicle weight
rating of 10,000 pounds
or less…………………… 31% 10 20
C–1 Single unit vehicles
With a manufacturer’s
gross weight rating of
more than 10,000
pounds………………… 43.5% 14 40
C–2 Combination of a two–
axle towing vehicle and
a trailer with a gross
weight of 3,000 pounds
or less…………………… 43.5% 14 40
C–3 Buses, regardless of the
number of axles, not
having a
manufacturer’s weight
rating…………………… 43.5% 14 40
C–4 All combination of
vehicles in driveaway–
towaway combinations… 43.5% 14 40
D All other vehicles and
combinations of vehicles
…………………………… 43.5% 14 50