Don't mistake an Off the Road Vehicle for Farm Machinery or a Vehicle of Farm Husbandry.
MTO Farm Guide - 1a) Introduction
http://www.ofa.on.ca/issues/fact-sheet/Farm-Implements-on-the-Road
Slow moving vehicles
(2) The following are slow moving vehicles:
1. Farm tractors and self-propelled implements of husbandry.
2. Vehicles (other than bicycles, motor assisted bicycles and disabled motor vehicles in tow) that are not capable of attaining and sustaining a speed greater than 40 kilometres per hour on level ground when operated on a highway.
3. Motor vehicles towing an implement of husbandry. 1994, c. 28, s. 1; 2009, c. 5, s. 32.
Exception
(3) The slow moving vehicle sign is not required if the slow moving vehicle is operated on a highway only to cross it directly. 1994, c. 28, s. 1; 2002, c. 18, Sched. P, s. 21 (2).
Prohibition
(4) No person shall place a slow moving vehicle sign on or near a fixed object where it is readily visible from a highway. 1994, c. 28, s. 1.
Exception
(5) Subsection (4) does not apply to a facsimile of a slow moving vehicle sign that is displayed for the information of highway users. 1994, c. 28, s. 1.
Prohibition
(6) No person shall operate on a highway a vehicle, other than a slow moving vehicle, with a slow moving vehicle sign attached to it or to a trailer, implement of husbandry or other device being towed by it. 2002, c. 18, Sched. P, s. 21 (3).
Same
(6.1) No person shall operate on a highway a slow moving vehicle with a slow moving vehicle sign attached to it or to a trailer, implement of husbandry or other device being towed by it, at a speed greater than 40 kilometres per hour. 2002, c. 18, Sched. P, s. 21 (3).
Regulations
(7) The Lieutenant Governor in Council may make regulations,
(a) prescribing the type and specifications of the slow moving vehicle sign and its location on the vehicle;
(b) providing that subsection (1) does not apply to a horse-drawn vehicle when driven by a person whose religious convictions or beliefs prohibit the display of devices such as the slow moving vehicle sign;
(c) prescribing the type and specifications of a marker or device, requiring that it be displayed, instead of the slow moving vehicle sign, on a horse-drawn vehicle when driven by a person described in clause (b), and prescribing the location of the marker or device on the vehicle;
(d) respecting any matter considered necessary or advisable to carry out the intent and purpose of this section. 1994,