1. (a) The operator or passenger shall not be required to wear a protective helmet.
2. (b) The operator shall not be required to wear goggles if the windshield of such vehicle is equipped with visual material which meets standard Z26.1—1966 (for motorcycle use) of the American Standards Association, Inc.
3. (c) The motorcycle need not be equipped with a rear view mirror attached to the handlebars or grips if such vehicle is equipped on the left side with a rear view mirror which is adjusted to give the operator a clear and full view of the road and condition of traffic behind such vehicle.

Pursuant to the authority contained in section 218 of the Vehicle and Traffic Law, it has been determined that three-wheel motorcycles, equipped with a cab enclosing the occupant or occupants and a seat or seats similar to the seats of a passenger vehicle or truck, have particular characteristics which make compliance with certain provisions of the Vehicle and Traffic Law and these regulations relating to motorcycle and motorcycle operator and passenger equipment inappropriate. Therefore, such vehicles and occupants thereof are exempted from the provisions relating to such equipment in the following respects: