Just thought of something else to scare the OP with...

In most other countries you can rely on there beeing speed limit signs that tell you what the maximum speed is.

In Germany you can't - at least not in town.

The speed limit in towns and villages is 50 kph unless otherwise indicated. But... there is NO 50 kph sign when you enter a town or village - just a square dark yellow sign displaying the name of the town or village you are entering.

This dark yellow sign doubles up as a speed limit sign

It's very very easy to get caught out by this if you're not used to it.

When you leave town there is another yellow sign, with the name crossed out. This doubles up as an "end of 50 kph speed limit" sign.