Size and mass requirements
251.1The Lieutenant-Governor in Council may make regulations
(a)
respecting the width, height and length of a vehicle or any combination or units of vehicles;
(b)
respecting dimensions within the overall size of vehicles or any combination or units of vehicles;
(c)
respecting the extension or overhang of mirrors, other devices or a load relative to a vehicle;
(d)
respecting the combination of units of vehicles that may be coupled together;
(e)
respecting exemptions from or exceptions to the provisions of regulations made under paragraphs (a) to (d).