Over the past decade, commuters in large U.S. cities where relying on a personal vehicle can be not just inconvenient but cost-prohibitive have gradually grown dependent on ride-sharing apps.

On Wednesday morning, they’ll find out what withdrawal feels like. Drivers for Uber, Lyft, and other platforms frustrated by what they describe as low pay and a lack of job security are staging a two-hour strike in locations from New York City to Los Angeles and Washington, D.C.