1. A motorcycle or moped shall not be driven upon a highway while carrying more than one person unless such motorcycle or moped is designed by the manufacturer to carry more than one person.
2. A passenger shall ride:
(a) Behind the driver and astride the permanent or regular seat which was designed for two persons;
(b) Astride another seat firmly attached at the rear of the driver; or
(c) In a sidecar attached.
3. Every such motorcycle or moped designed for transporting a passenger shall be equipped with footrests adjusted to fit such passenger.