He said a man, who he later learned was a taxi commission agent, summoned a ride in the mid-afternoon through the Uber app for a ride from the Embassy Suites downtown to Ballpark Village. As the ride ended, Hernlund said a car pulled up behind him with a flashing light on the dash. Another taxi commission agent got out, as did a uniformed St. Louis police officer, and he was ticketed.

A police spokeswoman said the officer was off duty and working a part-time job for the taxi commission.

The ticket did not say the amount of the fine, and Hernlund said his court date in the St. Louis municipal court had been postponed.

None of the tickets issued by the taxi commission were at the airport, where UberX drivers have been dropping off passengers. The Uber app does not allow people to summon an UberX pickup from the airport, although McNutt said there are ways around that. Uber’s more-expensive service Uber Black is available and operates by the rules.

The six cab companies say it’s unfair that their drivers must pay the special fees to work at the airport and Uber does not.