Uber riders and drivers are protesting legislation that would put a cap on for-hire vehicles.

Outside City Hall, supporters of the service warned of the consequences of the new bill, which would put a growth cap on the number of for-hire vehicle licenses in the city while the city studies how e-hail companies are affecting traffic.

Critics say City Hall is working with the taxi industry to destroy Uber, but City Council members say that's not the case.

"Three months ago, a trade group of medallion owners proposed a cap on for-hire vehicles. Last week, the exact same proposal was made by Councilman Ydanis Rodriguez. This is no coincidence," said Josh Mohrer, general manager of Uber NYC.

"First of all, the yellow taxi industry are subject to environmental impact study, and the rest of the player, the livery and black car, they also should be subject to environmental impact study," said City Councilman Ydanis Rodriguez of Manhattan.

Advocates of the bill say e-hail companies have made city traffic worse, putting thousands of new cars on the road. They say it's also making pollution a bigger problem.

Uber has said it plans to add 10,000 new drivers in the city by the end of the year.