Re: Trunk Door Open
By law, you only need to use a signal/marker on the protuding goods if they stick out the back by more than 1 meter, but it's a good idea anyway.
No, a simple red cloth is not acceptable when the signal is required (more than 1 meter overhang). The signal must be at least 1000cm2 of visible surface area with approx. 10cm wide red and white stripes.
I dont have a link. Info 's from my book from ASTAG, the organization that oversees all of the STVAs in CH.