Brazil’s biggest city has proposed a path to legalize the ride-sharing app Uber, setting off a citywide protest by taxi drivers.

Sao Paulo Mayor Fernando Haddad says his plan would accept Uber drivers as part of the transportation system if they pay a license fee for each trip they make. A final decision will be made after a public consultation that finishes within 30 days.

Cab drivers responded by blocking roads in key areas Tuesday morning, including the city center and the local airport. Unionized cabbies forced colleagues to join the protest and pushed journalists out. Cabbies warned they would conduct further blockages.

Uber’s press office in Brazil welcomed the mayor’s decision. The ride-sharing app operates in four Brazilian cities: Sao Paulo, Rio de Janeiro, Belo Horizonte and Brasilia.

This article was written by The Associated Press from The Associated Press and was legally licensed through the NewsCred publisher network.

Photo Credit: Uber on the Apple Watch. Skift