A recent study shows the algorithm used by ride-sharing companies Uber and Lyft may discriminate against customers taking trips to or from predominantly non-white neighborhoods.

The study shows Uber and Lyft charged a higher rate per mile for trips where the destination or pick-up point was in a neighborhood with a higher percentage of non-white residents and low-income residents.

In 2016, a study found widespread racial and gender bias among Uber and Lyft.

The researcher acknowledges that the study was not based on actual demographic data of rideshare users,” the representative wrote.

“In fact, the study makes clear that speed and demand have the highest correlation with algorithmically generated fares and that individual demographic data is neither available to rideshare companies nor used in the algorithms that determine pricing.