Pending what type of vehicle was pulling the trailer. Black lettered licence plates will fall into this.....
Application of Part
4. This Part applies to commercial motor vehicles for which each of the gross vehicle weight, registered gross weight, manufacturers gross vehicle weight rating and gross combination weight rating is 4,500 kilograms or less. O. Reg. 363/04, s. 4.
Securement of load
5. (1) A load carried on a commercial motor vehicle on a highway must be secured by means of,
(a) sides, sideboards or stakes and rear stakes, endgate or endboard that,
(i) are securely attached to the vehicle,
(ii) are strong enough and high enough to ensure that the load will not shift on or fall from the vehicle, and
(iii) have no opening large enough to permit any of the load to pass through;
(b) at least one tiedown that meets the requirements of subsection 2 (1) for each 3.04 linear metres of lading or fraction thereof, and as many additional tiedowns that meet the requirements of subsection 2 (1) as are necessary to secure each part of the load, either by direct contact between the load and the tiedown or by contact between the load and dunnage; or
(c) any other means that prevents a load from shifting or falling that is similar to and at least as effective as the means specified in clause (a) or (b). O. Reg. 363/04, s. 5 (1).
(2) A tiedown or dunnage in contact with exterior, topmost items of a load and securely holding each interior and lower item shall be deemed to comply with the requirements for contact in clause (1) (b). O. Reg. 363/04, s. 5 (2).
(3) If the load may shift in transit, the load must be blocked, restrained or contained in such a manner that it will not shift in a forward direction when the vehicle decelerates at a rate of six metres per second per second or more and must be,
(a) securely blocked or braced against the sides, sideboards or stakes of the vehicle; or
(b) secured by devices that conform to the requirements set out in clause (1) (b) or (c). O. Reg. 363/04, s. 5 (3).