Germany. I found an article about a case where the parking offender tried to appeal the penalty (translated):

The taxis picked up passengers waiting at the stops and drove them to other stops along the route. This went on for an hour, then the car parked not far from a sign saying “Please keep a sufficient distance from the tracks” was towed away and the route was clear again. This interactive view on Google Street View shows the location.

When the VGF then demanded €973.13, €25 of this was a flat-rate fee for expenses – and the rest was the cost of the rail replacement taxis. After hearing witness statements, the court ruled out any manipulation by the taxi industry, and the court also found no evidence of any delay in towing the car.