An auto rickshaw (in India) or rickshaw (in Pakistan), also known as a baby taxi (in Bangladesh), Bajay or Bajaj (in Jakarta, Indonesia), Bemo in Bali, Indonesia, three-wheeler or trishaw (in Sri Lanka), tuk-tuk (in Thailand), trishaw, autorick, bajaji (in Madagascar and Tanzania), keke Napep or Maruwa (in Nigeria), rick, tricycle (in the Philippines), mototaxi, baby taxi, lapa or tukxi (Piaggio Ape Calessino) in popular parlance, is a motorized development of the traditional pulled rickshaw or cycle rickshaw.
Most have three wheels and do not tilt. An exception is in Cambodia, where two different types of vehicles are called tuk-tuks, one of which (also known as a remorque) has four wheels and is composed of a motorcycle (which leans) and trailer (which does not).
The auto rickshaw is a common form of urban transport, both as a vehicle for hire and for private use, in many countries around the world, especially those with tropical or subtropical climates, including many developing countries.
Japan has exported three-wheelers to Thailand since 1934. Moreover, The Ministry of Posts and Telecommunications of Japan donated about 20,000 used three-wheelers to Southeast Asia. In Japan, three-wheelers went out of use in the latter half of the 1960s.