Maximum allowable gross vehicle weight — transition for non-designated vehicles and combinations
 22. (1) For the purpose of section 118 of the Act, the maximum allowable gross vehicle weight for a non-designated vehicle or vehicle combination described in subsection (2) and before the date specified in that subsection is the lowest of, (a)  the amount calculated under clause 118 (1) (a) of the Act; (b)  the amount calculated under clause 118 (1) (b) of the Act; and (c)  the maximum allowable gross vehicle weight under the appropriate Vehicle Weight Table from Vehicle Weight Tables 1 to 29, as determined in accordance with section 38.  O. Reg. 457/10, s. 21. (2) Subsection (1) applies to the following non-designated vehicles and vehicle combinations before the specified date: 1.  Before January 1, 2016, a tractor-trailer combination that includes a single semi-trailer, if the semi-trailer has four or more deployed axles, was manufactured before 2006 and is not an end dump semi-trailer or an open-top hopper dump semi-trailer. 2.  Before January 1, 2016, a tractor-trailer combination with two trailers, if both trailers were manufactured before 2006. 3.  Before January 1, 2021, a tractor-trailer combination that includes a single carbon dioxide tank semi-trailer, cryogenic tank semi-trailer or tag-axle tank semi-trailer, if the semi-trailer has three or fewer deployed axles. 4.  Before January 1, 2021, a truck, bus or recreational vehicle, if the truck, bus or recreational vehicle was manufactured before July 1, 2011. 5.  Before January 1, 2021, a truck-trailer combination if both the truck and trailer were manufactured before July 1, 2011. 6.  Subject to subsection (4), before January 1, 2021, a truck-trailer combination if, i.  either the truck or the trailer, but not both, was manufactured before July 1, 2011, and ii.  the other vehicle is a designated truck or is a trailer that meets all of the requirements in order to be part of a designated truck-trailer combination.  O. Reg. 457/10, s. 21; O. Reg. 167/12, s. 2 (1). (3) Before January 1, 2021, subsection (1) applies to a non-designated tractor-trailer combination that includes a single tank semi-trailer with three or fewer axles deployed, other than a carbon dioxide tank semi-trailer, cryogenic tank semi-trailer or tag-axle tank semi-trailer, except that the maximum allowable gross vehicle weight is determined by subtracting 3,000 kilograms from the weight determined under that subsection.  O. Reg. 457/10, s. 21. (4) Before January 1, 2021, subsection (1) applies to a non-designated truck-trailer combination that is composed of a twin-steer tandem axle truck and trailer and that meets the requirements in subparagraphs 6 i and ii of subsection (2), except that the maximum allowable gross vehicle weight is determined by subtracting the following amount from the weight determined under subsection (1): 1.  If the trailer is a triaxle pony trailer or a triaxle full trailer, 2,500 kilograms. 2.  If the trailer is a pony trailer with a wheelbase of 8.75 metres or more or a full trailer with a wheelbase of 7.25 metres or more and the trailer is not a triaxle trailer, i.  5,500 kilograms, if its base length is less than 18.25 metres, ii.  4,500 kilograms, if its base length is 18.25 metres or more but less than 18.75 metres, iii.  3,500 kilograms, if its base length is 18.75 metres or more but less than 19.25 metres, or iv.  2,500 kilograms, if its base length is 19.25 metres or more. 3.  If the trailer is a pony trailer with a wheelbase of less than 8.75 metres or a full trailer with a wheelbase of less than 7.25 metres and the trailer is not a triaxle trailer, i.  5,500 kilograms, if it has one axle, ii.  8,500 kilograms, if it has two axles, or iii.  9,500 kilograms, if it has three or more axles.  O. Reg. 167/12, s. 2 (2). (5) In subsection (4), “triaxle” with reference to a trailer, means a trailer with a single self-steer axle in the front and a tandem axle in the rear; “twin-steer tandem axle truck” means a 4-axle truck with a front tandem axle and a rear tandem drive axle.  O. Reg. 167/12, s. 2 (2). 23., 24. Revoked:  O. Reg. 457/10, s. 21.