C-24.2, r. 29 - Regulation respecting road vehicle registration
10. The detachable licence plate obtained in accordance with sections 143 and 159 must be affixed either:
(1) at the rear of the trailer or frame of a trailer covered by section 143;
(2) at the front of road vehicles transporting road vehicles by the saddle-mount method; or
(3) at the front of road vehicles transported by the drive-away method or, where the vehicles are operated in a convoy, at the front of the first vehicle so transported.