There are very specific mentions in the VER that one shall not install glazing unless it complies with the standards set out in s.70 and 71 (see below): Therefore, if you stop a vehicle with window tint and the driver says "I just had this installed at business XYZ", then obtain a statement from that person, get a copy of the sales receipt and do the following:
Issue the driver a ticket under this section 72(3) and then go to business XYZ and issue a ticket section 72(1) to the business entity. Would anyone like to debate the merits of this action? It would be welcomed.
Here are the relevant sections:
70(1) A person shall not install, replace or cover the window glazing in a windshield or in a left or right side window of a motor vehicle that is beside or forward of the driver with a transparent, translucent or opaque material.
(2) A person shall not install, replace or cover the rear window glazing in a motor vehicle with a transparent, translucent or opaque material unless the motor vehicle has outside rear view mirrors on both the left and right that comply with section 74(2).
(3) A person shall not install, replace or cover the window glazing in a motor vehicle with a material that reflects the headlamps of approaching vehicles into the eyes of the driver of another vehicle.
(4) A person shall not install, replace or cover the window glazing in a motor vehicle with a material that reflects sunlight into the eyes of the driver of another vehicle.
(5) A person may replace the window glazing installed by the manufacturer of a motor vehicle with the same type of glazing.
(6) A person may apply clear untinted frost shields to a window of a motor vehicle only if they do not impair the view through the window by discolouring, scratching or damaging the glazing.
(7) A person may apply stickers to the window of a motor vehicle only if they do not limit the driver’s field of vision or otherwise impair the safe operation of the motor vehicle.
71(1) For the purposes of this section, “American National Standard” means the standard adopted under section 58(3).
(2) The glazing referred to in subsection (3) must be appropriate to the make and model of the motor vehicle.
(3) A person shall not keep or use window glazing for motor vehicles unless the glazing complies with the specifications and standards set out in the American National Standard.
(4) A windshield must be made of laminated safety glass.
(5) A window in a motor vehicle, other than a windshield, may be made of laminated safety glass or heat treated safety glass.
(6) A windshield, side window or rear window in a motor vehicle must be made of glass unless another glazing material is prescribed by the American National Standard.
(7) A piece of safety glass manufactured for use in accordance with the American National Standard must be visibly, legibly and permanently marked
(a) with “American Standard” or “AS”,
(b) with the manufacturer’s distinctive designation, trademark or name, and
(c) with the appropriate numeral as set out in section 6 of the American National Standard.
Replacement glazing that is cut from flat sheets and installed in a motor vehicle need not be marked if the glazing supplier certifies in writing that the replacement glazing otherwise complies with this section.
(9) A camper unit must have windows that are glazed in accordance with this section.
Prohibition72(1) A person shall not install a windshield or glazing in a motor vehicle unless the glazing complies with sections 70 and 71.
(2) A person shall not install glazing in a camper unit unless the glazing complies with section 70.(3) A person shall not operate a motor vehicle on a highway unless the windshield and window glazing comply with sections 70 and 71.