A product marketed as a "plate cover" is designed specifically to prevent red light cameras and electronic toll systems from photographing or reading your licence plate clearly. Is using one legal?

Correct answer: B. No — devices specifically meant to defeat red light camera or electronic toll plate-reading are prohibited

Section 13(3.0.1) and (3.1) specifically prohibit obstructing a number plate with any device or material that prevents it from being accurately photographed by a red light camera system or identified by an electronic toll system — a plate cover engineered to defeat those systems is exactly what these subsections target, and contravening them is itself an offence under subsection (4).

Source: MTO Driver's Handbook: Highway Traffic Act, Part II (Permits) — Section 13(3.0.1)-(3.1), plate covers defeating camera systems