Uber and Lyft are pushing back against a New York City effort to regulate app-based ride-hailing services.
The proposal before the city's Taxi and Limousine Commission would require car services that riders can book with their smartphones to comply with many of the rules that govern the yellow cabs with which they compete.
The proposed rule changes would address fares, the availability of wheelchair-accessible cars and restrictions on picking up passengers at airports.
San Francisco-based Uber and Lyft say the regulations would discourage innovation.
A few dozen drivers in black shirts protested outside the taxi commission's Manhattan headquarters before a hearing on Thursday. They chanted: "We love Uber!"