LEXINGTON, Ky. — A team from the University of Kentucky (UK) has found the introduction of ride-hailing services like Uber and Lyft have had a drastic impact on public transit ridership across the U.S., Business Insider reports.

The UK study found that for each year after Transportation Network Companies (TNCs) enter a market, heavy rail ridership can be expected to decrease by 1.3% and bus ridership can be expected to decrease by 1.7%.

Using a random-effects model, the team set out to look at ride-hail and transit trends in 22 of the nation’s largest cities. The study accounted for 10 different variables, including population, density, proportional car ownership, gas prices, and transit miles in each metro area.

Ride-hailing effects are so substantial that, if the current trend continues, bus service in cities studied by UK researchers could be hit nearly 13% over the eight years. For the full story, click here.

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