HTA Definitions Sec 1
"road-building machine" means a self-propelled vehicle of a design commonly used in the construction or maintenance of highways, including but not limited to,
(a) asphalt spreaders, concrete paving or finishing machines, motor graders, rollers, tractor-dozers and motor scrapers,
(b) tracked and wheeled tractors of all kinds while equipped with mowers, post-hole diggers, compactors, weed spraying equipment, snow blowers and snow plows, front-end loaders, back-hoes or rock drills, and
(c) power shovels on tracks and drag lines on tracks,
but not including a commercial motor vehicle;
"commercial motor vehicle" means a motor vehicle having permanently attached thereto a truck or delivery body and includes ambulances, hearses, casket wagons, fire apparatus, buses and tractors used for hauling purposes on the highways
"motor vehicle" includes an automobile, a motorcycle, a motor-assisted bicycle unless otherwise indicated in this Act, and any other vehicle propelled or driven otherwise than by muscular power,
but DOES NOT include a street car or other motor vehicle running only upon rails, a power-assisted bicycle, a motorized snow vehicle, a traction engine, a farm tractor, a self-propelled implement of husbandry or a road-building machine
Permit requirements
7. (1) No person shall drive a motor vehicle on a highway unless,
(a) there exists a currently validated permit for the vehicle;
(b) there are displayed on the vehicle, in the prescribed manner,
(i) number plates
Above is merely a suggestion/thought and in no way constitutes legal advice or views of my employer. www.OHTA.ca