Paratransit is recognized in North America as special transportation services for people with disabilities, often provided as a supplement to fixed-route bus and rail systems by public transit agencies. Paratransit services may vary considerably on the degree of flexibility they provide their customers. At their simplest they may consist of a taxi or small bus that will run along a more or less defined route and then stop to pick up or discharge passengers on request. At the other end of the spectrum—fully demand responsive transport—the most flexible paratransit systems offer on-demand call-up door-to-door service from any origin to any destination in a service area. In addition to public transit agencies, Paratransit services are operated by community groups or not-for-profit organizations, and for-profit private companies or operators.
Typically, minibuses are used to provide paratransit service. Most paratransit vehicles are equipped with wheelchair lifts or ramps to facilitate access.
In the United States, private transportation companies often provide paratransit service in cities and metropolitan areas under contract to local public transportation agencies. Veolia Transport, First Transit and MV Transportation are among the largest private contractors of paratransit services in the United States and Canada.
"Definition: any type of public transportation that is distinct from conventional transit, such as flexibly scheduled and routed services such as airport limousines, carpools, etc. Etymology: para- 'alongside of' + transit" The use of "paratransit" ("para transit", "para-transit") has evolved and taken on two somewhat separate broad sets of meaning and application.
The more general meaning involved projects starting in the early 1970s, documented by the Urban Institute in the 1974 book Para-transit: Neglected options for urban mobility, followed a year later by the first international overview, Paratransit: Survey of International Experience and Prospects. These are still extremely important in many parts of the world. Paratransit is an alternative mode of flexible passenger transportation that does not follow fixed routes or schedules.
Since the early 1980s, particularly in North America, the term began to be used increasingly to describe the second meaning: special transport services for people with disabilities. In this respect, paratransit has become a subsector and business in its own right.