169.81 HEIGHT AND LENGTH LIMITATIONS.
Subdivision 1. Height.
(a) Except as provided in paragraph (b), no vehicle unladen or with
load shall exceed a height of 13 feet six inches.
(b) A double-deck bus may not exceed a height of 14 feet three inches. Any carrier operating
a double-deck bus exceeding 13 feet six inches shall obtain from the commissioner, with respect
to highways under the commissioner's jurisdiction, and from local authorities, with respect to
highways under their jurisdiction, an annual permit to operate the bus upon any highway under the
jurisdiction of the party granting the permit. Annual permits shall be issued in accordance with
applicable provisions of section
. The fee for an annual permit issued by the commissioner
is as provided in section
169.86, subdivision 5
Subd. 2. Length of single vehicle; exceptions.
(a) Statewide, no single vehicle may exceed
40 feet in overall length, including load and front and rear bumpers, except:
(1) mobile cranes, which may not exceed 48 feet in overall length;
(2) buses, which may not exceed 45 feet in overall length; and
(3) type A, B, or C motor homes as defined in section
168.011, subdivision 25
, paragraph (c),
which may not exceed 45 feet in overall length.
(b) Statewide, no semitrailer may exceed 48 feet in overall length, including bumper and
load, but excluding non-cargo-carrying equipment, such as refrigeration units or air compressors,
necessary for safe and efficient operation and located on the end of the semitrailer adjacent to
the truck-tractor. However, statewide, a single semitrailer may exceed 48 feet, but not 53 feet, if
the distance from the kingpin to the centerline of the rear axle group of the semitrailer does not
exceed 43 feet.
(c) Statewide, no single trailer may have an overall length exceeding 45 feet, including
the tow bar assembly but exclusive of rear bumpers that do not increase the overall length by
more than six inches.
(d) For determining compliance with this subdivision, the length of the semitrailer or trailer
must be determined separately from the overall length of the combination of vehicles.
(e) No semitrailer or trailer used in a three-vehicle combination may have an overall length
in excess of 28-1/2 feet, exclusive of:
(1) non-cargo-carrying accessory equipment, including refrigeration units or air compressors
and upper coupler plates, necessary for safe and efficient operation, located on the end of the
semitrailer or trailer adjacent to the truck or truck-tractor;
(2) the tow bar assembly; and
(3) lower coupler equipment that is a fixed part of the rear end of the first semitrailer or trailer.
Subd. 2a. Number of units in vehicle combination; generally, exceptions.
no combination of vehicles coupled together may consist of more than two units, except as
provided in paragraph (b).
(b) Three-unit combinations may only be used as provided for in subdivisions 3, paragraph
(c); 3c; 8; and 10. Further, vehicles transporting milk from the point of production to the point
of first processing may consist of no more than three units. Mount combinations, consisting of
a truck or truck-tractor transporting similar vehicles by having the front axle of the transported
vehicle mounted onto the center of the rear part of the preceding vehicle, may be used.
Subd. 3. Length of vehicle combinations.
(a) Statewide, except on the highways identified
under provisions in paragraph (c), no combination of vehicles may exceed a total length of 75 feet.
(b) However, the total length limitation does not apply to combinations of vehicles
(1) telephone poles, electric light and power poles, piling, or pole-length pulpwood; or
(2) pipe or other objects by a public utility when required for emergency or repair of public
service facilities or when operated under special permits as provided in section
These combinations of vehicles must be equipped with sufficient clearance markers, or lamps for
night transportation, on both sides and upon the extreme ends of a projecting load to clearly mark
the dimensions of the load.
(c) The following combination of vehicles regularly engaged in the transportation of
commodities may operate only on divided highways having four or more lanes of travel, and on
other highways as may be designated by the commissioner of transportation subject to section
169.87, subdivision 1
, and subject to the approval of the authority having jurisdiction over the
highway, for the purpose of providing reasonable access between the divided highways of four or
more lanes of travel and terminals, facilities for food, fuel, repair, and rest, and points of loading
and unloading for household goods carriers, livestock carriers, or for the purpose of providing
continuity of route:
(1) a truck-tractor and semitrailer exceeding 75 feet in length;
(2) a combination of vehicles including a truck-tractor and semitrailer drawing one additional
semitrailer which may be equipped with an auxiliary dolly;
(3) a combination of vehicles including a truck-tractor and semitrailer drawing one full trailer;
(4) a truck-tractor and semitrailer designed and used exclusively for the transportation of
motor vehicles or boats and exceeding an overall length of 75 feet including the load; and
(5) a truck or truck-tractor transporting similar vehicles by having the front axle of the
transported vehicle mounted onto the center or rear part of the preceding vehicle, defined in
Code of Federal Regulations, title 49, sections 390.5 and 393.5 as drive-away saddlemount
combinations or drive-away saddlemount vehicle transporter combinations, when the overall
length exceeds 75 feet.
(d) Vehicles operated under the provisions of this section must conform to the standards for
those vehicles prescribed by the United States Department of Transportation, Federal Highway
Administration, Bureau of Motor Carrier Safety, as amended.
Subd. 3a.[Repealed, 1983 c 198 s 15
Subd. 3b.[Repealed, 1983 c 198 s 15
Subd. 3c. Recreational vehicle combination.
Notwithstanding subdivision 3, a recreational
vehicle combination may be operated without a permit if:
(1) the combination does not consist of more than three vehicles, and the towing rating of the
pickup truck is equal to or greater than the total weight of all vehicles being towed;
(2) the combination does not exceed 70 feet in length;
(3) the middle vehicle in the combination does not exceed 28 feet in length;
(4) the operator of the combination is at least 18 years of age;
(5) the trailer carrying a watercraft, motorcycle, motorized bicycle, off-highway motorcycle,
snowmobile, all-terrain vehicle, motorized golf cart, or equestrian equipment or supplies meets all
requirements of law;
(6) the trailers in the combination are connected to the pickup truck and each other in
conformity with section
(7) the combination is not operated within the seven-county metropolitan area, as defined in
473.121, subdivision 2
, during the hours of 6:00 a.m. to 9:00 a.m. and 4:00 p.m. to 7:00
p.m. on Mondays through Fridays.
Subd. 3d. Combination including automobile tow dolly.
Notwithstanding subdivisions 2a
and 3, a combination consisting of a single-unit truck or a pickup truck and not more than two
two-wheeled automobile tow dollies may be operated without a permit when:
(1) the combination is operated by an employee or agent of an automobile tow dolly
manufacturer or a truck rental company;
(2) no vehicle is being transported on either dolly; and
(3) the combination does not exceed 50 feet in length.
Subd. 3e. Articulated buses.
Notwithstanding subdivision 2, a motor carrier of passengers
registered under section
may operate without a permit an articulated bus of up to 61 feet
Subd. 4. Projecting loads.
The load upon any vehicle operated alone, or the load upon the
front vehicle of a combination of vehicles, shall not extend more than three feet beyond the front
wheels of such vehicle or the front bumper of such vehicle if it is equipped with such a bumper.
Subd. 5. Manner of loading.
No vehicle shall be driven or moved on any highway unless
such vehicle is so constructed, loaded, or the load securely covered as to prevent any of its load
from dropping, sifting, leaking, blowing, or otherwise escaping therefrom, except that sand may
be dropped for the purpose of securing traction, or water or other substances may be sprinkled on
a roadway in cleaning or maintaining such roadway. This subdivision shall not apply to motor
vehicles operated by a farmer or the farmer's agent when transporting produce such as small
grains, shelled corn, soybeans, or other farm produce of a size and density not likely to cause
injury to persons or damage to property on escaping in small amounts from a vehicle. Violation
of this subdivision by a vehicle that is carrying farm produce and that is not exempted by the
preceding sentence is a petty misdemeanor.
Subd. 5a. Firewood load.
No vehicle that has a cargo area without a rear wall may be driven
or moved on a trunk highway with a load of cut firewood of less than three feet in length unless
the rear of the cargo area is covered with a material of sufficient strength to prevent any part of the
load from escaping from the rear. No person shall transport firewood in any vehicle in an unsafe
manner. Violation of this subdivision is a petty misdemeanor except that a peace officer may issue
a citation that amounts to a warning (1) for a first offense, and (2) if, in the judgment of the citing
peace officer at the site, the load of firewood is made safe for transport.
Subd. 5b. Securing load; exceptions.
(a) The driver of a vehicle transporting sand, gravel,
aggregate, dirt, lime rock, silica, or similar material shall ensure that the cargo compartment of
the vehicle is securely covered if:
(1) the vertical distance from the top of an exterior wall of the cargo compartment to the
load, when measured downward along the inside surface of the wall, is less than six inches; or
(2) the horizontal distance from the top of an exterior wall of the cargo compartment to the
load is less than two feet.
(b) The driver shall not operate a vehicle to transport sand, gravel, aggregate, dirt, lime rock,
silica, or similar material in or on any part of the vehicle other than in the cargo container. The
driver shall clean the vehicle of loose sand, gravel, aggregate, dirt, lime rock, silica, or similar
material before the vehicle is moved on a road, street, or highway following loading or unloading.
(c) A driver of a vehicle used to transport garbage, rubbish, trash, debris, or similar material
is not required to cover the transported material as long as (1) the vehicle is being operated at a
speed less than 30 miles per hour, (2) the vehicle is not being operated on an interstate highway,
and (3) no part of the load escapes from the vehicle. A driver shall immediately retrieve material
that escapes from the vehicle, when safe to do so.
Subd. 6.[Repealed, 1967 c 215 s 2
Subd. 7.[Repealed, 1983 c 198 s 15
Subd. 8. Livestock or poultry loading chute trailer.
Notwithstanding the provisions of
subdivisions 2 and 3, a farm truck as defined in section
168.011, subdivision 17
, including a
single-unit truck or a combination of vehicles of no more than two units and otherwise not
exceeding the size and weight limitations prescribed by law, and a livestock or poultry truck,
including a single-unit truck or a combination of vehicles of no more than two units and not
otherwise exceeding the size and weight limitations prescribed by law, owned or operated by a
livestock or poultry carrier and used primarily for transporting livestock or poultry for hire, may
draw one additional two-wheel trailer, the loaded weight of which does not exceed 3,000 pounds,
for the sole purpose of transporting a livestock or poultry loading chute; provided that such
two-wheel trailer shall not be drawn by a two-unit combination on the public highways of this
state beyond a ten-mile radius of the home post office of the owner or operator of the two-unit
combination. The two-wheel trailer used solely for transporting a livestock or poultry chute is
special mobile equipment.
Subd. 9. Application of subdivision 8.
Subdivision 8 shall not apply to the seven-county
Subd. 10. Pickup truck; limitation on drawing trailer.
Notwithstanding any other
provision of this section or any other law to the contrary, a pickup truck used primarily in
the production or transportation of liquid fertilizer, anhydrous ammonia, or any agricultural
commodity as defined in section
17.53, subdivision 2
, may draw not to exceed two empty trailers
when the resulting combination does not exceed the size and weight limitations otherwise
prescribed by law. A pickup truck when drawing two trailers shall not be operated on the
highways of this state beyond a 35-mile radius of the home post office of the owner of the pickup
truck nor at a speed exceeding 35 miles per hour.
History: (2720-272, 2720-273) 1937 c 464 s 122,123; 1943 c 226 s 1; 1953 c 731 s 1; 1955
c 399 s 1; 1957 c 270 s 1; 1957 c 923 s 2; 1959 c 143 s 1; 1959 c 276 s 1; 1963 c 770 s 1; 1965 c
401 s 1; 1967 c 215 s 1; 1967 c 271 s 1; 1973 c 17 s 1; 1973 c 123 art 5 s 7; 1973 c 546 s 4; 1973
c 666 s 1; 1973 c 707 s 1,2; 1974 c 52 s 1; 1974 c 343 s 2,3; 1974 c 358 s 1,2; 1977 c 113 s 1;
1980 c 491 s 1; 1980 c 513 s 1,2; 1981 c 214 s 20; 1981 c 348 s 1; 1982 c 617 s 9,10; 1983 c 198
s 7,8; 1984 c 654 art 3 s 62; 1986 c 398 art 13 s 4,5; 1986 c 444; 1988 c 518 s 2; 1988 c 544 s 2;
1989 c 250 s 2; 1990 c 548 s 2,3; 1991 c 333 s 16,17; 1993 c 111 s 2,3; 1993 c 117 s 6; 1993 c
182 s 1; 1995 c 3 s 1; 1995 c 223 s 1,2; 1996 c 289 s 4-6; 1997 c 159 art 2 s 29; 1997 c 250 s 7;
1998 c 403 s 14,15; 2001 c 83 s 2; 2004 c 240 s 1; 1Sp2005 c 6 art 3 s 49; 2006 c 231 s 2