h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

..is a very hard task. There are at least 10 times the number of traffic-signs than in any other country that tell you things you already know. There is a speed limit which is always broken, except for the well known points where the police is waiting. There are usually only two lanes in each direction and the right one is always full of cars (illegally) parking there. On the left lane sometimes tram drive, usually as slow as they can, and you can't pass it because the right lane is full as well. If you want to stop on the street and begin blinking 500 metres before, you nearly get deaf in the following honk-concert...

Terrible..

You forgot: most German cities have a terrible system of one-way streets. So you cannot go straigt from one end of the city to the other. You have to know the maze or you are lost.
And try to explain a visitor how to get from A to B! It is easier to get in the car and show at each crossing the right turn, than to explain.
If the city has an university the one-way streets are not really one-way streets at all, because you face a lot of bycicles haeding the wrong way. And sometimes this is even allowed. In these cities you are faster with a bike than a car.