491. Subject to section 479, no person may ride a bicycle on a public highway on which the maximum speed allowed is over 50 km/h unless(1) he uses a cycle lane separated from the roadway and specially laid out to prevent vehicles from crossing over from the roadway to the cycle lane or vice versa, or having that effect;
(2) he is 12 years of age or over; or
(3) he is taking part in an excursion led by a person of full age.