Thanks. I now have a way to divert trucks into an industry without disrupting the other traffic.

There are two different ways for the roas lines: For example go to the camp site. There are the road lines like a chessboard. In These case cars are llways turn right and thus drive across the entire chessboard. The other way is to copy the characteristics from a train line, and paste it to the road line. Sowwith you have a switch which you can use - or (go to the parking garage) automaticly. Another tipp is (go the the company withe the "Gesldsammellager" there is a truck that constantly reverses into the hall. The roadlne is not visible, because flat slabs cover this road.

Wow! A huge layout...must have taken a long time to build. What I would really like to know is how you made switchable road lanes.