The waiting time between payment at the pay machine and exit at the barrier is adapted to the size of the car park. Sufficient time has been allowed for the journey from the pay machine to your vehicle and then to the exit.
If the waiting time has nevertheless been exceeded, a corresponding message "Additional payment required" will be displayed at the exit terminal.
In this case, please look for the nearest pay station. If you do not know where this is located, the staff at the car park control centre will be happy to help you. Simply press the call button at the exit.