A taxi, also known as a taxicab or simply a cab, is a type of vehicle for hire with a driver, used by a single passenger or small group of passengers, often for a non-shared ride. A taxicab conveys passengers between locations of their choice. This differs from public transport where the pick-up and drop-off locations are decided by the service provider, not by the customers, although demand responsive transport and share taxis provide a hybrid bus/taxi mode.
There are four distinct forms of taxicab, which can be identified by slightly differing terms in different countries:
Hackney carriages, also known as public hire, hailed or street taxis, licensed for hailing throughout communities
Private hire vehicles, also known as minicabs or private hire taxis, licensed for pre-booking only
Taxibuses, also come in many variations throughout the developing countries as jitneys or jeepney, operating on pre-set routes typified by multiple stops and multiple independent passengers
Limousines, specialized vehicle licensed for operation by pre-booking
Although types of vehicles and methods of regulation, hiring, dispatching, and negotiating payment differ significantly from country to country, many common characteristics exist. Disputes over whether ridesharing companies should be regulated as taxicabs resulted in some jurisdictions creating new regulations for these services.
The word taxicab is a compound word formed as a contraction of taximeter and cabriolet. Taximeter is an adaptation of the German word Taxameter, which is itself a variant of the earlier German word Taxanom. Taxe /ˈtaksə/ is a German word meaning "tax", "charge", or "scale of charges". The Medieval Latin word taxa also means tax or charge. Taxi may ultimately be attributed to Ancient Greek τάξις from τάσσω meaning "to place in a certain order," as in commanding an orderly battle line, or in ordaining the payment of taxes, to the extent that ταξίδι (taxidi), meaning "journey" in Modern Greek, initially denoted an orderly military march or campaign.