Demand-responsive transport (DRT), also known as demand-responsive transit, demand-responsive service,[1] Dial-a-Ride[2] transit (sometimes DART),[3] flexible transport services,[4] Microtransit,[5] Non-Emergency Medical Transport (NEMT),[5] Carpool[6] or On-demand bus service is a form of shared private or quasi-public transport for groups traveling where vehicles alter their routes each journey based on particular transport demand without using a fixed route or timetabled journeys.[7] These vehicles typically pick-up and drop-off passengers in locations according to passengers needs and can include taxis, buses or other vehicles.[8][9] Passengers can typically summon the service with a mobile phone app or by telephone; telephone is particularly relevant to older users who may not be conversant with technology.[10]
One of the most widespread types of demand-responsive transport (DRT) is to provide a public transport service in areas of low passenger demand where a regular bus service is not considered to be financially viable, such as rural and peri-urban areas.[11] Services may also be provided for particular types of passengers. One example is the paratransit programs for people with a disability. The provision of public transport in this manner emphasises one of its functions as a social service rather than creating a viable movement network.[12][13][14]
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was invoked but never defined (see the help page).