DETROIT -- In areas served by Uber Technologies Inc., Lyft Inc. and other ride services operate, consumers may buy fewer cars and take fewer trips, according to a study released on Thursday.

The study, compiled by the University of Michigan Transportation Research Institute, Texas A&M Transportation Institute and Columbia University, focused on Austin, Texas, where on-demand services like Uber and Lyft pulled services due to a local ordnance.

The study found that 41 percent of 1,200 people surveyed said they used their own car to fill the void left by Uber and Lyft, and 9 percent purchased a vehicle for this purpose.