R909-2-4. Legal Size Vehicle Dimensions

(1) Maximum legal vehicle dimensions, laden and un-laden, that may be operated without special permits on Utah highways: (a) height: 14 feet; (b) width: eight feet six inches; and (c) length: See Table 1 Legal Size Vehicle Dimensions. TABLE 1 Legal Size Vehicle Dimensions Vehicle Maximum Length Comments Truck tractor 45' Measured from bumper to bumper. Straight truck 45' Measured from bumper to bumper. Semitrailer 53' Measured from bumper to bumper. Full trailer 53' Measured from bumper to bumper. Truck, tractor, and double trailer 61' Measured from the front of the first trailer to the rear of the second trailer. Tractor is not included in the measurement. Truck, tractor, and triple trailer 61' Measured from the front of the first trailer to the rear of the third trailer. Tractor is not included in the measurement. Truck and single trailer 65' Measured from bumper to bumper. Truck and two trailers 65' Measured from bumper to bumper. Non-commercial RV 65' Measured from bumper to bumper. Stringer steered 80' Measured from bumper to bumper. Dromedary plus trailer 65' * Measured from bumper to bumper. A dromedary unit is considered a truck trailer configuration whether laden or unladen. Saddle mount 97' Measured from furthest extremities to the front and rear. Maximum of one power unit, three saddle mount vehicles, and one full mount. Drawbar 15' ** Measured from box to box or frame to frame. Front overhang 3' *** Measured from the front of the power unit. Rear overhang 6' Measured from the rear of the bed or body of the vehicle. * The maximum length is 75' when a dromedary plus trailer is hauling Class 1 munitions on interstates, US highways, and reasonable access routes. ** The 15' maximum length does not apply in the case of a connection between two vehicles transporting poles, pipe, machinery, or structural material that cannot be dismembered when transported upon a pole trailer. *** The maximum length is 4' when a stinger steer is in use.