Smart lift axles

Ontario

Vehicle Weights and Dimensions — For Safe, Productive and Infrastructure-friendly Vehicles

Part III — Preconditions for Designated Vehicles or Designated Combinations

5.1 (1) Smart lift axle technology is a system on a semi-trailer in a designated tractor-trailer combination consisting of a load sensing control device and a lifting mechanism that,

(a) automatically and without driver action lifts one, two or three of the smart lift axles of an axle unit or axle group, but,

(i) only lifts the smart lift axles if the weight on the remaining axle unit or group will be at or below the weight limits permitted under the Act and this Regulation, and

(ii) does not begin to lift any smart lift axle if any self-steering axle is deployed;

(b) maintains the braking power of the remaining axles within the axle unit or axle group when the smart lift axles are lifted;

(c) automatically deploys all axles within the axle unit or axle group when the semi-trailer is parked, the tractor power is off or the system malfunctions; and

(d) does not cause the semi-trailer to fail to meet any standard under the Motor Vehicle Safety Regulations made under the Motor Vehicle Safety Act (Canada). O. Reg. 228/19, s. 4.

(2) For the purpose of subclause (1) (a) (i), in determining whether the weight remaining on the axle unit or group meets the weight requirements under the Act or this Regulation, the applicable weight requirements are those for the axle unit or group with the number of axles deployed. O. Reg. 228/19, s. 4.

(3) An axle unit or axle group that is equipped with smart lift axle technology must maintain, at a minimum, the fixed axles set out in the following table:

SMART LIFT TECHNOLOGY - FIXED AXLE REQUIREMENT

O. Reg. 228/19, s. 4.

(4) In the case of designated tractor-trailer combination 7, the smart lift axle technology must prevent the lifting of only the second or third axle or only both second and third axles of the quadruple axle. O. Reg. 228/19, s. 4.

© King's Printer for Ontario, 2012-2021. The text is not the official version of Ontario's Highway Traffic Act or associated regulations. For official text, refer to www.ontario.ca/laws.