Last week we were driving 43km/s on a road with 50km/s limit. The driver behind us drove 10cm away from our bumper for like 5 minutes, and even though our indicator was on he didn't calculate we will slow down even further to turn right, and made an emergency brake then honked like 10 seconds as he/she was driving away as fast as that car could.
To be fair, it's not remotely as bad as back in Istanbul (what a mess there!), but I expected more from Germany, a country in which people normally love sticking to the rules.
Sometimes I watch this channel to see I'm not the only regular victim of traffic abuse: https://www.youtube.com/c/EureVideosFahrn%C3%BCnftig
In a weird way, it calms me down to see others also having similar problems. Edit: Just opened the latest video and here's another one - https://youtu.be/8mUi2uOzXvs?t=543
The acoustic warning signal is meant to warn other traffic participants of imminent danger - which includes the intend to overtake (outside of towns). There is no fine for that.
> but I expected more from Germany, a country in which people normally love sticking to the rules.
Careful there: Your scenario does not exactly paint you as a hero. Driving deliberately slowly (you mentioned for "like 5 minutes") when higher speeds are possible (both from the street conditions and your vehicle's capabilities), if it hinders others from using legal use of the road (which includes driving at the speed limit), can be construed to be "Nötigung", which is a crime. (The other driver of course could be fined for the same as well)