About The parking-ban zone, the parking disc and the parking garage: which statement is WRONG?

The parking disc is rounded UP to the next whole or half hour, not down.
The parking-disc duty applies to motor vehicles with MORE than two wheels.
✓ At a parking garage you pay when you enter, together with taking the ticket.
A parking-ban zone applies to both sides of the road, even if the entry sign stands on only one side.

Correct answer: At a parking garage you pay when you enter, together with taking the ticket.

Explanation

On entry you take a ticket at the barrier; payment happens before exiting, at the payment machine or the exit, based on the elapsed time

The parking disc is rounded UP to the next whole or half hour, not down. Rounding down wrongly grants extra parking time
The parking-disc duty applies to motor vehicles with MORE than two wheels. An ordinary motorcycle (2 wheels) falls outside this
A parking-ban zone applies to both sides of the road, even if the entry sign stands on only one side. This differs from a loose E1 sign (parking ban) or E2 sign (stopping ban), which both only govern the side where the sign stands