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 Washington State, bicycles, motor scooters, skateboards, and similar modes of transportation are subject to specific regulations. Bicyclists are required to follow the same traffic laws as motor vehicles, including stopping at stop signs and obeying traffic signals. They are typically allowed to ride on the roadway, on the shoulder, in bike lanes, or on bike paths, unless otherwise posted. Helmets are not mandated by state law for bicycle riders, but many cities and counties have their own helmet laws, so it's important to check local ordinances. Motor scooters, depending on their power and speed capabilities, may require a driver's license to operate, and helmets are generally required for riders under the age of 18. Skateboards are often regulated at the local level, with some cities banning their use in certain areas or on public roads. Speed limits for these modes of transportation are generally the same as for motor vehicles, unless specific local ordinances set different limits. Operating any of these modes of transportation under the influence of alcohol or drugs is illegal and subject to the same DUI laws as motor vehicles. It's important for operators to be aware of and comply with both state statutes and local municipal ordinances, as regulations can vary significantly from one locality to another.