In what appeared to be a response to the launch of a driver-less service by Uber in Pittsburgh, two aldermen in Chicago proposed an ordinance in the windy city to ban such self-driving vehicles.

Ed Burke, one of the aldermen, said that since no technology is 100 percent safe, he would not like to see “The streets of Chicago used as an experiment that will no doubt come with its share of risks.”

The ride-sharing taxi service, Uber, initiated a pilot program in which the general public in Pittsburgh could use self-driving vehicles as an alternative to the traditional driver-operated cars. The driver-less cars all had drivers as back-up if anything indeed went wrong.

The proposal bans the operation of autonomous vehicles on any road, with a $500 fine for violations of the ordinance.

A hearing date for the proposal has yet to be scheduled, but the ordinance would first have to make its way through the finance and transportation committee of the Chicago city council.