Good morning dear municipality, I have a question regarding the A: General regulations B: Registration or non-approval possibilities of an own underrun protection. Here is a sketch. The bright colours serve only for identification. The underrun protection replaces part of the original bumper but lies in driving direction HINTER of the bumper and the impact plate behind the bumper. It also replaces the standard plastic underbody under the engine/gear box. bt neither protruding nor pointed edges. The partly cut off original push rod is stabilized by screwing in the impact plate, if necessary (red dots on the picture) Question A: does something like this have to be checked/entered at all? Question B: if something like this has to be removed/entered? What does it cost me? Don’t misunderstand. I don’t want to be “BOOKED ON EVERYONE, I don’t know where it is but it’s SO” sayings. d here asked. It is about a clean manual work. I will still contact the TÜV itself in due course. Nevertheless, I am interested in the opinion of the TÜV experienced and knowledgeable here in the forum. Here is a sketch of the whole.