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 New Hampshire, bicycles, motor scooters, skateboards, and similar modes of transportation are subject to specific laws and regulations. Bicyclists are generally required to follow the same traffic laws as motor vehicle drivers, such as obeying traffic signals and signs. They must ride as far to the right as is safe, except when making a left turn or when the right side is unsafe for cycling. Helmets are not mandated by state law for bicycle riders, but local ordinances may require them, especially for children. Motor scooters must be registered, and operators must have a valid driver's license; helmets are required for riders under 18 years of age. Skateboards are typically regulated at the local level, and some municipalities may restrict their use on public streets and sidewalks. Speed limits for these modes of transportation are generally the same as for motor vehicles, unless otherwise posted. Operating any of these modes of transportation under the influence of alcohol or drugs is illegal and subject to the same DUI/DWI laws that apply to motor vehicle drivers. It's important to check local ordinances as they can impose additional restrictions or requirements beyond state statutes.