Ein Knöllchen auf dem eigenen Grundstück? Ist das Korrekt?

Getting a ticket is always annoying. Getting one on your own property is even more annoying! But is the whole thing legally sound? I'm clarifying whether this is correct with Christoph Reuter from the Voigt law firm (Cologne-Koblenz). You can find more on traffic law here:    / @reuterregelt   The thumbnail is non-judgmental and serves to illustrate the problem:    / @polizeinrw   If you're ever caught, be friendly and polite to the police! You'll achieve more with courtesy and respect.