Which transportation method is excluded from the legal definition of 'vehicle'?

The term "vehicle" is often defined in legal contexts to encompass various modes of transportation, typically including cars, bicycles, and motorcycles due to their usage on roads or highways. However, devices using stationary rails or tracks are generally excluded from this definition. This exclusion is because such devices, like trains or trolleys, operate on a fixed path and are subject to different regulations compared to road vehicles.

In legal statutes, especially those concerning motor vehicle laws, the focus tends to be on vehicles that are designed for road use and not on those that travel along established tracks. Consequently, while cars, bicycles, and motorcycles are all considered vehicles under most transportation laws, devices that utilize stationary rails or tracks are categorized differently, reflecting their unique operational and regulatory requirements. This distinction is important for legal clarity and enforcement of traffic laws relevant to various transportation modalities.