Oregon Administrative Rules › Chapter 734 - DEPARTMENT OF TRANSPORTATION, HIGHWAY DIVISION › Division 74 - ISSUANCE OF PERMITS FOR COMBINATIONS OF VEHICLES HAVING GROSS WEIGHTS IN EXCESS OF 80,000 POUNDS › Section 734-074-0008 - Definitions

Current through Register Vol. 63, No. 7, July 1, 2024
As used in division 74 rules:
(1) "Auxiliary axle" is an axle that
			 qualifies as a booster axle, flip axle or lift axle and when attached to the
			 rear of a trailer shall be included in the measurement of the
			 trailer.
(2) "Booster Axles(s)"
			 means a separate vehicle bolted or pinned to another vehicle that redistributes
			 weight from one or more axles to other axles and pivots from side to side at
			 the connection point or has wheels that steer during turning.
(3) "CCD" means the Commerce and Compliance
			 Division of the Oregon Department of Transportation.
(4) "Converter dolly" means those devices
			 towed behind a vehicle and used to convert a semitrailer to function as a
			 self-supporting trailer.
(5)
			 "Dromedary truck-tractor" means a motor truck designed to carry a load and also
			 pull a semitrailer by using a kingpin to fifth wheel connection. Unless
			 specifically authorized, a dromedary truck-tractor may not tow a stinger
			 steered trailer.
(6) "Flip axle"
			 means an axle that is bolted or pinned to a vehicle and flips from the closed
			 position on the trailer to a deployed position on the ground extending the
			 length and hauling capacity of the trailer.
(7) "Gross Vehicle Weight Rating" (GVWR)
			 means the gross vehicle weight rating as defined in ORS
			 801.298.
(8) "Idle Reduction System" means an
			 auxiliary power unit or other device or technology that is used to reduce
			 long-duration idling by allowing the main drive engine or auxiliary
			 refrigeration engine to be shut down.
(9) "Lift Axle" means an axle(s) that can be
			 raised from or lowered to the surface of the ground.
(10) "Log-truck" means a motor vehicle
			 designed and used in conjunction with a pole trailer to transport one load of
			 logs where one end of the logs rests upon the log truck and one end of the logs
			 rests upon the pole trailer.
(11)
			 "Motor Truck" means a motor vehicle that is primarily designed or used for
			 carrying loads other than passengers.
(12) "New generation wide base single tire"
			 means a tire that has a nominal section width over 14 inches and a ratio of
			 width to height less than or equal to 55.
(13) "Pole Trailer" means a trailer attached
			 or secured to a vehicle and ordinarily used for transportation of long or
			 irregular loads such as logs capable of generally sustaining themselves as
			 beams between the towing vehicle and the pole trailer.
(14) "Reasonably uniform in length" as used
			 in ORS
			 818.210,
			 means a variance of not more than eight feet from the longest to shortest
			 self-supporting trailers or semitrailers within the authorized combination of
			 vehicles. It does not include the length of a converter dolly when used to
			 convert a semitrailer to a self-supporting trailer.
(15) "Tandem drive axles" means two or more
			 axles spaced more than 40 inches but not more than 96 inches apart, neither of
			 which can be raised from the surface of the ground, and where no one axle
			 carries less than forty percent (40%) of the tandem axle weight. Each axle of a
			 tandem drive axle shall have four tires or each axle may have two tires if tire
			 width is at least 15 inches and each axle transmits motive power to the road
			 surface. Any weight controls for the tandem axles on a power unit must be
			 designed, installed and used such that the axles always distribute the load so
			 no axle, tandem axle or group of axles exceeds the legal weight limits or
			 bridge formula limits. All axle assemblies of the tandem drive axles (including
			 axles, tires, brakes) must be adequate to carry the weight loading but may not
			 have less than a 20,000 pound rating for each axle.
(16) "Truck-Tractor" means a motor vehicle
			 designed and used primarily for drawing (towing) other vehicles and constructed
			 so as not to carry any load other than a part of the weight of the vehicle or
			 load, or both, as drawn.
(17)
			 "Variable-load suspension axle" means an axle that can vary the amount of
			 weight being transmitted to the surface of the road by adjustments made by the
			 driver. Examples of adjustments available to the driver include, but are not
			 limited to, the use of tool(s), lock and key, pressure regulators with handles
			 or knobs. The term variable load suspension axle does not include use of
			 devices such as height control valves, axles controlled by devices that raise
			 the axle when the vehicle moves backward or pre-set pressure regulators which
			 are not adjustable by the driver.
Statutory/Other Authority: ORS
				  184.619  & 818.220
Statutes/Other Implemented: ORS
				  818.200  & 818.220