Laws governing the operation of bicycles, motor scooters (electric or gas powered), skateboards, and other modes of transportation on public streets, highways, and roads vary from state to state, and among cities and towns (municipal ordinances).

Some of the important laws governing these alternative modes of transportation include proper roadways and lanes for operation; speed limits; required safety precautions (helmets, etc.); application of traffic laws; license requirements; and the application of laws regarding being under the influence of alcohol or drugs.

In Maryland, bicycles, motor scooters, skateboards, and similar modes of transportation are subject to specific regulations. Bicyclists are generally allowed to use public roads and have the same rights and duties as motor vehicle drivers, but they must ride as close to the right side of the road as practicable. Maryland law requires all bicyclists under the age of 16 to wear a helmet. Motor scooters and mopeds must be titled and insured, and operators must have a valid driver's license or moped operator's permit. Helmets and eye protection are also required for motor scooter riders. Skateboards are typically regulated at the municipal level, with some cities banning their use on public roads and sidewalks. Speed limits for these modes of transportation are not typically specified, but riders must operate at a safe speed. Traffic laws, such as stop signs and traffic signals, apply to all these modes of transportation. Operating any of these vehicles under the influence of alcohol or drugs is illegal and subject to the same DUI laws that apply to motor vehicle drivers.