['Longer Combination Vehicles']
['Longer Combination Vehicles']
04/17/2025
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Combination: Truck tractor and 2 trailing units—LCV
LENGTH OF THE CARGO–CARRYING UNITS: 95 feet
MAXIMUM GROSS VEHICLE WEIGHT: 129,000 pounds
OPERATIONAL CONDITIONS:
WEIGHT: Single–axle maximum weight limit is 20,000 pounds, tandem–axle maximum weight limit is 34,000 pounds, and the gross vehicle weight limit is 129,000 pounds, subject to the Federal Bridge Formula.
DRIVER: The driver must have a commercial driver’s license with the appropriate endorsement. Drivers must comply with the Federal Motor Carrier Safety Regulations of the U.S. Department of Transportation and Title 28, Arizona Revised Statutes.
VEHICLE: This vehicle must be able to operate at speeds compatible with other traffic on level roads and maintain 20 miles per hour speed on grades where operated. A heavy–duty fifth wheel is required. The kingpin must be a solid type, not a screw–out or folding type. All hitch connectors must be of a no–slack type, preferably an air–actuated ram. Axles must be those designed for the width of the body. All braking systems must comply with State and Federal requirements. A brake force-limiting valve, sometimes called a “slippery road”valve, may be provided on the steering axle. Mud flaps or splashguards are required. When traveling on a smooth, paved surface, trailers must follow in the path of the towing vehicle without shifting or swerving more than 3 inches to either side when the towing vehicle is moving in a straight line.
PERMITS: Permits are required. Fees are charged. This vehicle is allowed continuous travel, however, the State may restrict or prohibit operations during periods when traffic, weather, or other safety considerations make such operations unsafe or inadvisable. All multiple–trailer combinations shall be driven in the right–hand traffic lane.
ACCESS: Access is allowed for 20 miles from I–15 Exits 8 and 27 or 20 miles from other authorized routes.
ROUTES:
From | To | |
I–15 | Nevada | Utah |
US 89 | 20 miles south of Utah | Utah |
US 160 | US 163 | New Mexico |
US 163 | US 160 | Utah |
LEGAL CITATIONS:
ARS 28–107 | ARS 28–1009 | ARS 28–1011.O |
ARS 28–108.5 | ARS 28–1009.01 | ARS 28–1012 |
ARS 28–108.13 | ARS 28–1011.A | ARS 28–1013 |
ARS 28–108.14 | ARS 28–1011.C | ARS 28–1014 |
ARS 28–403 | ARS 28–1011.F | ARS 28–1031 |
ARS 28–405 | ARS 28–1011.K | ARS 28–1051 |
ARS 28–1001 | ARS 28–1011.L | ARS 28–1052 |
ARS 28–1004.G | ARS 28–1011.M | R17–40–426 |
ARS 28–1008 |
Combination: Truck tractor and 3 trailing units—LCV
LENGTH OF THE CARGO–CARRYING UNITS: 95 feet
MAXIMUM ALLOWABLE GROSS WEIGHT: 123,000 pounds (129,000 pounds on I–15)
OPERATIONAL CONDITIONS:
VEHICLE, and ACCESS: Same as the AZ–TT2 combination.
WEIGHT: Single–axle maximum weight limit is 20,000 pounds, tandem–axle maximum weight limit is 34,000 pounds, and the gross vehicle weight limit is 123,500 pounds (129,000 pounds on I–15), subject to the Federal Bridge Formula.
DRIVER: The driver must have a commercial driver’s license with the appropriate endorsement. Drivers must comply with the Federal Motor Carrier Safety Regulations of the U.S. Department of Transportation and Title 28, Arizona Revised Statutes. An experienced driver of a three trailing unit combination must train drivers. Training should be through special instructions or by traveling with the new driver until such time as the new driver is deemed adequately qualified by the trainer on the use and operation of these combinations.
PERMIT: Permits are required. Fees are charged. This vehicle is allowed continuous travel, however, the State may restrict or prohibit operations during periods when traffic, weather, or other safety considerations make such operations unsafe or inadvisable. These combinations shall not be dispatched during adverse weather conditions. All multiple–trailer combinations shall be driven in the right–hand traffic lane.
ROUTES: Same as the AZ–TT2 combination.
LEGAL CITATIONS: Same as the AZ–TT2 combination.
Combination: Truck–trailer
LENGTH OF THE CARGO–CARRYING UNITS: 69 feet
OPERATIONAL CONDITIONS:
WEIGHT: This combination must operate in compliance with State laws and regulations. Because it is not an LCV, it is not subject to the ISTEA freeze as it applies to maximum weight.
DRIVER, VEHICLE, PERMIT, and ACCESS: Same as the AZ–TT2 combination.
ROUTES: Same as the AZ–TT2 combination.
LEGAL CITATIONS: Same as the AZ–TT2 combination.
Combination: Truck–semitrailer–trailer
LENGTH OF THE CARGO–CARRYING UNITS: 98 feet
OPERATIONAL CONDITIONS:
WEIGHT: This combination must operate in compliance with State laws and regulations. Because it is not an LCV, it is not subject to the ISTEA freeze as it applies to maximum weight.
DRIVER, VEHICLE, PERMIT, and ACCESS: Same as the AZ–TT2 combination.
ROUTES: Same as the AZ–TT2 combination.
LEGAL CITATIONS: Same as the AZ–TT2 combination.
['Longer Combination Vehicles']
['Longer Combination Vehicles']
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