Researchers from the University of Toronto, Utah State University, and Brigham Young University have released findings of a report, which says that Uber increases public transit usage for the average travel agency, and that the effect grows over time, the Pacific Standard reports.

The report found that while its effects vary considerably with the size of the city and the specific type of mass transit, introducing the service to an area increased ridership significantly over the following two years and that the two types of transportation are, in most cases, complementary.

Mass-transit ridership was estimated using data from the National Transit Database, which differentiates between different modes of travel. The researchers then factored in such variables as the population of an area, its unemployment rate, and the average age, income, and education level of its residents. For the full story, click here.