2017 Iowa Code
Title VIII - TRANSPORTATION
Chapter 321 - MOTOR VEHICLES AND LAW OF THE ROAD
Section 321.430 - Brake, hitch, and control requirements.
Universal Citation:
IA Code § 321.430 (2017)
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MOTOR VEHICLES AND LAW OF THE ROAD, §321.430
321.430 Brake, hitch, and control requirements.
1. Every motor vehicle, other than a motorcycle, or motorized bicycle, when operated
upon a highway shall be equipped with brakes adequate to control the movement of and
to stop and hold such vehicle, including two separate means of applying the brakes, each of
which means shall be effective to apply the brakes to at least two wheels. If these two separate
means of applying the brakes are connected in any way, they shall be so constructed that
failure of any one part of the operating mechanism shall not leave the motor vehicle without
brakes on at least two wheels.
2. Every motorcycle and motorized bicycle, when operated upon a highway, shall be
equipped with at least one brake, which may be operated by hand or foot.
3. Every trailer, semitrailer, or travel trailer of a gross weight of three thousand pounds
or more shall be equipped with brakes adequate to control the movement of and to stop and
hold such vehicle when operated on the highways of this state. Every trailer, semitrailer, or
travel trailer with a gross weight of three thousand pounds or more shall be equipped with
a separate, auxiliary means of applying the brakes on the trailer, semitrailer, or travel trailer
from the cab of the towing vehicle, or with self-actuating brakes, and shall also be equipped
with a weight equalizing hitch with a sway control. Trailers or semitrailers with a truck or
truck tractor need only comply with the brake requirements.
4. Except as otherwise provided in this chapter, every new motor vehicle, trailer, or
semitrailer hereafter sold in this state and operated upon the highways shall be equipped
with service brakes upon all wheels of every such vehicle with the following exceptions:
a. Any motorcycle or motorized bicycle.
b. Any trailer or semitrailer of less than three thousand pounds gross weight need not be
equipped with brakes.
c. Trucks and truck tractors equipped with three or more axles and manufactured before
July 25, 1980, need not have brakes on the front wheels, except that such vehicles equipped
with two or more front axles shall be equipped with brakes on at least one of the axles;
however, the service brakes of the vehicle shall comply with the performance requirements
of section 321.431.
d. Only such brakes on the vehicle or vehicles being towed in a driveaway-towaway
operation need be operative as may be necessary to insure compliance by the
combination of vehicles with the performance requirements of section 321.431. The
term “driveaway-towaway” operation as used in this subsection means any operation in
which any motor vehicle or motor vehicles, new or used, constitute the commodity being
transported, when one set or more of wheels of any such motor vehicle or motor vehicles
are on the roadway during the course of transportation, whether or not any such motor
vehicle furnishes the motive power.
[S13, §1571-m17; C24, 27, 31, 35, §5039; C39, §5034.39; C46, 50, 54, 58, 62, 66, 71, 73, 75,
77, 79, 81, §321.430]
88 Acts, ch 1044, §1; 97 Acts, ch 108, §24; 2006 Acts, ch 1068, §29
Referred to in §321.189, §321.464, §805.8A(3)(ac)
For applicable scheduled fine, see §805.8A, subsection 3
Wed Feb 08 03:32:58 2017
Iowa Code 2017, Section 321.430 (18, 1)
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