Interpretation for Schedules
 37. (1) The following interpretive rules apply to Schedules 1 to 31: 1.  The column heading “Ref” refers to a reference number associated with a dimension of the designated vehicle or combination. Some of the dimensions are set out in the diagram at the top of the Schedule identified by their reference number. 2.  A reference to an axle unit in a Configuration Description is to a deployed axle unit.  If an axle unit is not referred to in a Configuration Description, the designated combination does not have that axle unit unless it is an additional axle described in subsection 5 (1). 2.1  If the axle unit or group is equipped with a smart lift axle, a reference to a tandem, tridem or quadruple axle in an axle unit description in a Dimensional Limit Chart or Weight Limit Chart shall be read as a reference to an axle unit or axle group of the number of axles actually deployed. 3.  Where a tire weight limit is expressed as weight per millimetre, the reference is to a millimetre of tire width. 4.  The sum of the maximum tire load ratings shall be determined by adding the highest tire load ratings of the tires as specified on the tire side walls. 5.  A vehicle that is required to comply with subsection 109 (2) of the Act and that does comply with that subsection shall be deemed to be in compliance with the width limits in Schedules 1 to 31. 6.  Maximum width shall be determined in accordance with subsections 109 (1), (3) and (4) of the Act. 7.  Maximum length shall be determined in accordance with section 109 of the Act, excluding subsection 109 (10.1) of the Act. 8.  “Not controlled” means that no measurement is prescribed. 9.  “Overall” refers to the total combination. 10.  In calculating allowable gross vehicle weight, where a Schedule refers to the actual weight on the front axle, if that weight exceeds maximum allowable weight for the axle, the maximum allowable weight must be used in the calculation.  O. Reg. 457/10, s. 28; O. Reg. 228/19, s. 6. (2) In Schedules 1 to 31, “AGVW” means allowable gross vehicle weight; “allowable gross vehicle weight” means the maximum permissible weight of a vehicle or vehicle combination for the purpose of section 118 of the Act; “bed length” means the external measurement of a trailer from the front of its cargo carrying space to the rear of its cargo carrying space, but excluding any portion of auxiliary equipment or machinery that extends beyond the front of the trailer and that is not designed for the transportation of goods; “box length”, in a truck-trailer combination, means the external measurement from the front of the load-carrying portion of the truck to the rear of the trailer, including load, but excluding any portion of auxiliary equipment or machinery that extends beyond the front of the load-carrying portion of truck and that is not designed or used for the transportation of goods; “converter dolly drawbar length” means the longitudinal distance from the centre of the hole in the fifth wheel of a converter dolly to the centre of its eye or equivalent device; “effective rear overhang”, except where otherwise specified, means the longitudinal distance from the turn centre of the vehicle to its rearmost point, including any load; “effective wheelbase” means the longitudinal distance between the geometric centres of front and rear axle units of a truck; “GAWR” means manufacturer’s gross axle weight rating; “hitch offset”, (a)  in the case of an A-train or C-train, means the longitudinal distance from the turn centre of the foremost semi-trailer to the articulation point of the hitch used to tow the rearmost trailer, and (b)  in the case of truck or tractor, means the longitudinal distance from the turn centre of the truck or tractor to the articulation point of the hitch or coupling device used to tow a trailer; “inter-city bus” means a bus commonly known as a motor coach that has, (a)  motive power mounted to the rear of the front axle, (b)  air-ride or torsion-bar suspension, (c)  a baggage area that is separate from the passenger cabin, and (d)  a passenger cabin with 15 or more reclining seats for passengers; “kg” means kilograms; “load equalized” means that a vehicle that is required by subsection 14 (1) to be designed to load equalize actually does load equalize within the meaning of subsection 14 (2); “m” means metres; “Max.” means maximum; “Min.” means minimum; “mm” means millimeters; “na” means not applicable; “not load equalized” means that a vehicle that is required by subsection 14 (1) to be designed to load equalize does not actually load equalize within the meaning of subsection 14 (2); “quadruple spread” means the longitudinal distance between the centres of the foremost and rearmost axles of the quadruple axle; “RV” means recreational vehicle; “self-steer”, with respect to an axle, means self-steering axle; “swing radius” means the greatest horizontal distance from the vertical axis through the centre of the kingpin to any point on the semi-trailer ahead of the kingpin, including load and any extension to the length caused by auxiliary equipment or machinery; “tag axle” means the rearmost axle of a bus or recreational vehicle that forms part of a two axle group with a drive axle; “tandem” means tandem axle; “track width” means the width of an axle across the outside faces of the tires measured at any point above the lowest point of the rim; “tridem” means tridem axle; “tri-drive” means tri-drive axle; “verified” means that the driver of the vehicle or vehicle combination has with him or her verification in writing of the manufacturer’s gross axle weight ratings of the axles of the vehicle or combination and provides that verification when demanded by a police officer or officer appointed for carrying out the provisions of the Act.  O. Reg. 457/10, s. 28; O. Reg. 167/12, s. 3; O. Reg. 16/14, s. 3.