Not really. A regressive tax is where the tax rate decreases as the amount subject to taxation increases.

It's true that a parking ticket would ding somebody who make $20k a lot more than somebody who makes $40k, but I want to see a full breakdown of who in what class drives. There's also the little matter of how this isn't a tax. If this were about the excise tax, I could see it being called regressive. This is about parking tickets, which can be avoided. The city is not going to come after you for abiding by the laws it passes.