Cab drivers blocked up the streets around City Hall to protest the ongoing illegal use of Uber services in Philly.

Cab drivers licensed by the Philadelphia Parking Authority (PPA) have demanded the city increase enforcement of unlicensed UberX drivers providing cab services, which they say is destroying their business.

The last such protest was just six weeks ago, demonstrating cabbies' increasing anger with the situation.

Even Uber Black drivers, who are licensed like PPA drivers and provide a higher-end Uber service, have joined with the PPA to protest UberX. Some Uber Black drivers have even sued Uber over the cheaper competition they face from UberX.

Legislation to legalize Uber X in Philadelphia is tied up on its way through the legislative process in Harrisburg.

Uber released a statement defending itself after the protest took place. 

"“Philadelphia has shown tremendous demand for more affordable options like uberX, and the Mayor as well as the City Council have expressed their support for ridesharing," Uber said in the statement. "At the same time, the taxi industry has resisted competition and innovation at every turn, even going so far as working with the PPA to make sure Philadelphia is excluded from the regulations that currently govern uberX in 66 out of 67 counties in Pennsylvania."