Steve-SKO
Senior Member
I had to go look up the codes on a few things here are the Iowa codes as of 2009.
321.1 Definitions of words and phrases.
d. "Motor home" means a motor vehicle designed as an integral unit to be used as a conveyance
upon the public streets and highways and for use as a temporary or recreational dwelling and having at
least four, two of which shall be systems specified in subparagraphs (1), (4), or (5) of this paragraph, of
the following permanently installed systems which meet American national standards institute and
national fire protection association standards in effect on the date of manufacture:
(1) Cooking facilities.
(2) Ice box or mechanical refrigerator.
(3) Potable water supply including plumbing and a sink with faucet either self-contained or with
connections for an external source, or both.
(4) Self-contained toilet or a toilet connected to a plumbing system with connection for external
water disposal, or both.
(5) Heating or air conditioning system or both, separate from the vehicle engine or the vehicle
engine electrical system.
(6) A one hundred ten - one hundred fifteen volt alternating current electrical system separate from
the vehicle engine electrical system either with its own power supply or with a connection for an
external source, or both, or a liquefied petroleum system and supply.
321.456 Height of vehicles.
A vehicle unladen or with load shall not exceed a height of thirteen feet, six inches, except that a vehicle or combination of vehicles coupled together and used exclusively for the transportation of passenger vehicles, light delivery trucks, panel delivery trucks, pickup trucks, or recreational vehicle chassis may operate with a height not to exceed fourteen feet.
321.457 Maximum length.
j. A motor home shall not have an overall length, excluding front and rear bumpers and safety equipment, in excess of forty-five feet.
k. A combination of two vehicles coupled together, one of which is a motor home, shall not have an overall length in excess of sixty-five feet.
321.392 Clearance and identification lights.
Every motor truck, and every trailer or semitrailer of over three thousand pounds gross weight, shall be equipped with the following lighting devices and reflectors in addition to other requirements of this chapter, and such devices shall be lighted at the times mentioned in section 321.384.
1. Every motor truck, whatever its size shall have the following:
a. On each side, one reflector, at or near the rear; and
b. On the rear, two reflectors, one at each side.
2. Every motor truck, eighty inches or more in width shall have the following in addition to the
requirements of subsection 1:
a. If thirty feet or less in overall length:
(1) On the front, two clearance lamps, one at each side; and
(2) On the rear, two clearance lamps, one at each side.
b. If more than thirty feet in overall length:
(1) On the front, two clearance lamps, one at each side;
(2) On each side, two side-marker lamps, one at or near the front, and one at or near the rear, and an
additional reflector at or near the front; and
(3) On the rear, two clearance lamps, one at each side.
3. Every truck tractor or road tractor shall have the following: a. On the front, two clearance lamps, one at each side if the tractor cab is as wide as, or wider than,
the widest part of the vehicle or vehicles towed; b. On each side, one side-marker lamp at or near the front; and c. On the rear, one tail lamp.
4. Every trailer or semitrailer having a gross weight in excess of three thousand pounds shall have
the following:
a. On the front, two clearance lamps, one at each side, if the trailer is wider in its widest part than
the cab of the vehicle towing it;
b. On each side, one side-marker lamp at or near the rear; two reflectors, one at or near the front and
one at or near the rear; and c. On the rear, two clearance lamps, one at each side; one stop light; one tail lamp; and two
reflectors, one at each side.
5. Every motor truck or combination of motor truck and trailer having a length in excess of thirty
feet or a width in excess of eighty inches shall be equipped with three identification lights on both front and rear. Each such group shall be evenly spaced not less than six nor more than twelve inches apart along a horizontal line near the top of the vehicle.
321.1 Definitions of words and phrases.
d. "Motor home" means a motor vehicle designed as an integral unit to be used as a conveyance
upon the public streets and highways and for use as a temporary or recreational dwelling and having at
least four, two of which shall be systems specified in subparagraphs (1), (4), or (5) of this paragraph, of
the following permanently installed systems which meet American national standards institute and
national fire protection association standards in effect on the date of manufacture:
(1) Cooking facilities.
(2) Ice box or mechanical refrigerator.
(3) Potable water supply including plumbing and a sink with faucet either self-contained or with
connections for an external source, or both.
(4) Self-contained toilet or a toilet connected to a plumbing system with connection for external
water disposal, or both.
(5) Heating or air conditioning system or both, separate from the vehicle engine or the vehicle
engine electrical system.
(6) A one hundred ten - one hundred fifteen volt alternating current electrical system separate from
the vehicle engine electrical system either with its own power supply or with a connection for an
external source, or both, or a liquefied petroleum system and supply.
321.456 Height of vehicles.
A vehicle unladen or with load shall not exceed a height of thirteen feet, six inches, except that a vehicle or combination of vehicles coupled together and used exclusively for the transportation of passenger vehicles, light delivery trucks, panel delivery trucks, pickup trucks, or recreational vehicle chassis may operate with a height not to exceed fourteen feet.
321.457 Maximum length.
j. A motor home shall not have an overall length, excluding front and rear bumpers and safety equipment, in excess of forty-five feet.
k. A combination of two vehicles coupled together, one of which is a motor home, shall not have an overall length in excess of sixty-five feet.
321.392 Clearance and identification lights.
Every motor truck, and every trailer or semitrailer of over three thousand pounds gross weight, shall be equipped with the following lighting devices and reflectors in addition to other requirements of this chapter, and such devices shall be lighted at the times mentioned in section 321.384.
1. Every motor truck, whatever its size shall have the following:
a. On each side, one reflector, at or near the rear; and
b. On the rear, two reflectors, one at each side.
2. Every motor truck, eighty inches or more in width shall have the following in addition to the
requirements of subsection 1:
a. If thirty feet or less in overall length:
(1) On the front, two clearance lamps, one at each side; and
(2) On the rear, two clearance lamps, one at each side.
b. If more than thirty feet in overall length:
(1) On the front, two clearance lamps, one at each side;
(2) On each side, two side-marker lamps, one at or near the front, and one at or near the rear, and an
additional reflector at or near the front; and
(3) On the rear, two clearance lamps, one at each side.
3. Every truck tractor or road tractor shall have the following: a. On the front, two clearance lamps, one at each side if the tractor cab is as wide as, or wider than,
the widest part of the vehicle or vehicles towed; b. On each side, one side-marker lamp at or near the front; and c. On the rear, one tail lamp.
4. Every trailer or semitrailer having a gross weight in excess of three thousand pounds shall have
the following:
a. On the front, two clearance lamps, one at each side, if the trailer is wider in its widest part than
the cab of the vehicle towing it;
b. On each side, one side-marker lamp at or near the rear; two reflectors, one at or near the front and
one at or near the rear; and c. On the rear, two clearance lamps, one at each side; one stop light; one tail lamp; and two
reflectors, one at each side.
5. Every motor truck or combination of motor truck and trailer having a length in excess of thirty
feet or a width in excess of eighty inches shall be equipped with three identification lights on both front and rear. Each such group shall be evenly spaced not less than six nor more than twelve inches apart along a horizontal line near the top of the vehicle.
