In the press one reads a lot about the particle (exhaust) madness in Germany. Whole cities should only be experienced with such funny coloured plaques. My car has Swiss license plates, but I am more often in Germany. I don’t get a badge with Swiss enrollment. How does that happen in concrete terms? I would be entitled to the yellow badge (EURO3 without DPF). When can I drive to the problematic cities and when not? Is this dependent on the measured values of the measurement? or does this always apply? Has the German bureaucrats regulated this in pure culture? The stylized, bitten apple on my tailgate doesn’t count?