67. No person shall drive upon a highway a motor vehicle, other than a commercial motor vehicle, that has attached thereto any mirror or mirrors that extend more than 305 millimetres from the side of the vehicle, except when the motor vehicle is towing another vehicle. R.S.O. 1990, c. H.8, s. 67.
"The hardest thing to explain is the obvious"
www.OHTA.ca & www.OntarioHighwayTrafficAct.com