Vuchic (Urban Transit Systems & Technology, 2007) defines paratransit as an “urban passenger transportation service mostly in vehicles operated on public streets and roads in mixed traffic; it is provided by private or public operators and it is available to certain groups of users or to the general public, but it is adaptable in its routing and scheduling to individual user’s desires in varying degrees.”
Based on the definition and how paratransit modes have evolved over many years, then we could say that the current ridesharing or car sharing services like Uber and Grab are essentially paratransit modes. They definitely fit the definition as do conventional taxis.
Loving your blog! Are you an urban planner or traffic engineer?