Utah Administrative Code
Topic - Transportation
Title R909 - Motor Carrier
Rule R909-2 - Utah Size and Weight Rule
Section R909-2-4 - Legal Size Vehicle Dimensions

TABLE 1

Legal Size Vehicle Dimensions

Vehicle

Maximum Length

Comments

Single motor vehicle

45 feet

Measured from bumper to bumper.

Semi Trailer

53 feet

A trailer may not exceed 53 feet.

Double trailer combinations

61 feet

Measured from the front of the first trailer to the rear of the second trailer, excluding appurtenances. There is no overall length limitation on a truck tractor and double trailer combination when the trailers coupled together measure 61 feet or less.

Stringer steered automobile transporter

80 feet or less

Stinger-steered automobile transports are measured from bumper to bumper and may have a front overhang of 4 feet or less and a rear overhang of 6 feet or less, with a maximum vehicle length of 80 feet or less, excluding overhangs.

Saddle Mount

97 feet

This will allow a maximum of three saddle mount vehicles, one power unit, and one full mount.

Truck trailer

65 feet

Measured from bumper to bumper combination

Dromedary unit

65 feet

Truck tractor, unloaded box deck and trailer. A dromedary unit is considered a truck trailer configuration whether laden or unladen.

75 feet

Dromedary units transporting Class 1 Explosives or munitions related security materials, as specified by the Department of Defense, are allowed up to 75 feet of overall length on the interstates, US highways and reasonable access routes without requiring a permit. Reasonable access means to the Interstate or US highway system.

All other combinations including recreational vehicles

65 feet

Measured from bumper

Overhang

3 feet front 6 feet rear

to bumper.

Vehicle may not carry any load extending more than 3 feet beyond the front of the power unit or more rear than 6 feet beyond the rear of the bed or body of the vehicle.

Drawbar

15 feet

The drawbar or other connection between any two vehicles, one of which is towing or drawing the other on a highway, may not exceed 15 feet in length from one vehicle to the other, measured from box to box or frame to frame, except in the case of a connection between any two vehicles transporting poles, pipe, machinery, or structural material that cannot be dismembered when transported upon a pole trailer.

Commercial delivery of light and weight and medium duty trailers

82 feet or less

Consisting of a trailer transporter towing unit and 2 trailers or semitrailers with a total weight not to exceed 26,000 pounds; and in which the trailers or semitrailers carry no property and constitute inventory property of a manufacturer, distributer, or dealer of such trailers or semitrailers, may have an overall length limitation of 82 feet or less on a towaway trailer transporter combination.