Definitions
 2. (1) The definitions in sections 108 and 114 of the Act apply to this Regulation.  O. Reg. 413/05, s. 2 (1). (2) In this Regulation, “A-train double” means a vehicle combination composed of a tractor, a semi-trailer and, (a)  a trailer converter dolly that is towed from a single hitch, as shown in Figure 1, on the centre line of the semi-trailer and another semi-trailer, or (b)  a full trailer attached to the semi-trailer as if a trailer converter dolly were used and towed from a single hitch, as shown in Figure 1, on the centre line of the semi-trailer;  “aggregate vehicle” means a vehicle or vehicle combination that is designed for dumping or spreading sand, gravel, crushed or uncut rock, asphalt, slag or rubble or any mixture of such materials and that is transporting a load consisting mostly of any of these materials; “axle spread” means the longitudinal distance between the centres of the foremost and rearmost axles of an axle unit; “B-train double” means a vehicle combination composed of a tractor and two semi-trailers, the rearmost of which is attached by a fifth wheel assembly whose lower half is mounted on the rear of the foremost semi-trailer, as shown in Figure 2;  “base length” means the distance measured between the centres of the first axle of the front axle of a vehicle or vehicle combination and the last axle of a vehicle or vehicle combination; “C-train double” means a vehicle combination consisting of a tractor and two semi-trailers, the second of which is attached to the first by a trailer converter dolly that has a frame rigid in the horizontal plane and that is towed from two hitches located in a horizontal transverse line on the foremost semi-trailer that preclude any rotation in the horizontal plane about the hitch point, as shown in Figure 3;  “carbon dioxide tank semi-trailer” means a tank semi-trailer that is used regularly to transport carbon dioxide, was manufactured to Transport Canada specification TC331 or United States Department of Transportation specification MC331 and bears the appropriate specification number on the compliance label or manufacturer’s identification plate affixed to the vehicle; “combination” and “vehicle combination” mean a combination of vehicles; “cryogenic tank semi-trailer” means a tank semi-trailer that was manufactured to United States Compressed Gas Association specification CGA341 or Transport Canada specification TC341 and bears the appropriate specification number on the compliance label or manufacturer’s identification plate affixed to the vehicle; “designated bus or recreational vehicle”, when followed by a number, means the designated bus or recreational vehicle identified by the same number in the Table to section 3.1; “designated tractor-trailer combination”, when followed by a number, means the designated tractor-trailer combination identified by the same number in the Table to section 3; “designated truck”, when followed by a number, means the designated truck identified by the same number in the Table to section 3.2; “designated truck-trailer combination”, when followed by a number, means the designated truck -trailer combination identified by the same number in the Table to section 3.3; “drawbar” means a towing structure that is connected to a trailer or a trailer converter dolly and that includes an eye or equivalent device for coupling to a trailer hitch; “drive axle” means an axle unit that is connected to the power source of a motor vehicle and that transmits tractive power to the wheels; “end dump semi-trailer” means a semi-trailer to which is permanently attached a body or box that is hinged and that can be raised to dump from the rear of the semi-trailer; “fifth wheel assembly” means a plate-type coupling device comprised of a kingpin, locking jaws and plates, the lower half of which is mounted on the rear portion of a vehicle frame or the frame of a trailer converter dolly and the upper half of which is fastened to the underside of the forward portion of a semi-trailer for the purpose of supporting and towing the semi-trailer; “forced-steer auxiliary pusher axle” means an axle that articulates in response to forces generated through mechanisms and linkages operated by the driver, but does not include the front axle of a vehicle or vehicle combination; “full trailer” means a trailer designed so that the whole of its own weight and of any load are carried on its own axles and includes a vehicle combination consisting of a semi-trailer and a trailer converter dolly; “inter-axle spacing” means the longitudinal distance separating two consecutive axle units within a vehicle or vehicle combination, measured from the centre of the rearmost axle of the foremost axle unit to the centre of the foremost axle of the other axle unit; “inter-vehicle-unit distance”, for a vehicle combination, means, (a)  the distance between the centres of the last axle of the motor vehicle or road building machine and the first axle of the towed vehicle, and (b)  the distance between the centres of the last axle of the first towed vehicle and the first axle of the second towed vehicle, but in subsection 38 (2), Schedules 11, 12 and 13 and Vehicle Weight Tables 3 to 29, it means the lesser of clauses (a) and (b); “long combination” means a tractor-trailer combination to which one or more of the following applies: 1.  The total length, including load, exceeds the 23 metre limit specified in subsection 109 (7) of the Act. 2.  The box length of a combination including more than one trailer exceeds the 18.5 metre limit specified in subsection 109 (8) of the Act. 3.  The semi-trailer length, excluding any portion of auxiliary equipment or machinery that extends beyond the front or rear of the semi-trailer and that is not designed or used for the transportation of goods, exceeds the 14.65 metre limit specified in subsection 109 (10) of the Act; “non-designated”, with reference to a truck, bus, recreational vehicle or vehicle combination means a truck, bus, recreational vehicle or vehicle combination that is not, respectively, a designated truck, a designated bus or recreational vehicle, a designated tractor-trailer combination, a designated truck-trailer combination or a designated saddlemount combination; “open-top hopper dump semi-trailer” means a semi-trailer to which is permanently attached an open-top body or box with bottom hoppers that can be opened to dump from the bottom of the semi-trailer; “pony trailer” means a trailer that is designed and used so that the preponderance of the trailer’s weight and load is carried on its own axles and that is equipped with a drawbar rigidly attached to the trailer; “quadruple axle” means a four axle group in which the axles, (a)  have their consecutive centres equally spaced, (b)  have their consecutive centres more than one metre apart, (c)  do not include a self-steering axle or a liftable axle, other than a smart lift axle, (d)  have the same number of tires at each wheel position, and (e)  are articulated from an attachment to the vehicle common to the consecutive axles or are designed to automatically equalize the load between the four axles under all conditions of loading; “self-steering axle” means an assembly of two or more wheels whose centres are in one transverse vertical plane and whose wheels can articulate in response to forces generated between the tires and the road or through mechanisms and linkages that operate independently of the driver; “single semi-trailer” means a semi-trailer that is the only trailer in a tractor-trailer combination; “smart lift axle” means a liftable axle contained within an axle unit or axle group that is equipped with smart lift axle technology; “smart lift axle technology” means a system that meets the description and requirements set out in section 5.1; “tag-axle tank semi-trailer” means a tank semi-trailer, (a)  that is not more than 14.65 metres in length, (b)  that is equipped with a rear single axle and a front tandem axle, whose inter-axle spacing is more than 2.5 metres, (c)  whose single axle, (i)  is a self-steering axle capable of turning 20 degrees in either direction, and (ii)  is not a liftable axle, and (d)  whose axles automatically equalize its load such that the weight on the self-steering axle is not more than 500 kilograms greater or less than the average weight per axle of the tandem axle; “tandem axle” means a dual axle as defined in section 114 of the Act that does not include a self-steering axle or a liftable axle, other than a smart lift axle, and that has the same number of tires at each wheel position; “tank full trailer” means a full trailer that is permanently attached to a closed tank having a capacity of 2.3 kilolitres or more; “tank pony trailer” means a pony trailer that is permanently attached to a closed tank having a capacity of 2.3 kilolitres or more; “tank semi-trailer” means a semi-trailer that is permanently attached to a closed tank having a capacity of 2.3 kilolitres or more; “tractor” means a commercial motor vehicle designed to draw one or more semi-trailers, or a semi-trailer and a full trailer, to which it is coupled by means of a fifth wheel assembly; “tridem axle” means a triple axle as defined in section 114 of the Act that does not include a self-steering axle or a liftable axle, other than a smart lift axle, and that has the same number of tires at each wheel position; “tri-drive axle” means a drive axle composed of a tridem axle in which each axle of the tridem axle transmits tractive power to its wheels; “truck” does not include a tractor or a bus; “turn centre” means the geometric centre, (a)  on a semi-trailer consisting only of one axle unit, of the axle unit, (b)  on a semi-trailer consisting of more than one axle unit, of the axle unit containing more axles, (c)  on a semi-trailer containing a quadruple axle, of the quadruple axle, (d)  on a tractor, full trailer or pony trailer, of the rear axle unit, (e)  on a truck, bus or recreational vehicle, of the drive axle unit. “wheelbase” means the longitudinal distance, (a)  from the centre of the kingpin to the turn centre, in the case of a semi-trailer or in the case of a full trailer without a turntable in designated truck-trailer combination 3, (b)  from the centre of articulation of the turntable to the turn centre, in the case of a full trailer with a turntable in designated truck-trailer combination 3, (c)  from the centre of the kingpin to the geometric centre of the tridem axle, in the case of the front portion of a hinged semi-trailer, and from the articulation point of the forward hinge to the geometric centre of the tandem axle, in the case of the rear portion of a hinged semi-trailer, (d)  from the centre of the front axle to the turn centre, in the case of a tractor, truck, bus or recreational vehicle, (e)  from the centre of the hitching device to the turn centre, in the case of a pony trailer or of a full trailer, other than a full trailer in designated truck-trailer combination 3.  O. Reg. 413/05, s. 2 (2); O. Reg. 457/10, s. 2 (1-13); O. Reg. 167/12, s. 1; O. Reg. 16/14, s. 1; O. Reg. 8/16, s. 1; O. Reg. 228/19, s. 1. (3) For the purposes of this Regulation, where a tire width has been marked on the tire by the manufacturer, the width of the tire shall be deemed to be as marked.  O. Reg. 413/05, s. 2 (3). (4) For the purposes of this Regulation, the month and year when a vehicle was manufactured or built is the earliest month and year on any incomplete vehicle manufacturer’s information label or manufacturer’s compliance label on the vehicle.  O. Reg. 457/10, s. 2 (14). Designated Vehicles and Combinations