Jawohl, designed for 1935! On the older autobahnen they have very tightly radiused curves. Also, you have never lived or might die until you have been in a 100 car fog pile up on the Autobahn.
BTW, German drivers are meticulous in obeying in-town rules. A good lesson here for us untermenschen in Amerika.
I think Americans tend to question authority just a leeeeetle bit more than Germans. Certainly, more so than Germans around the time the Autobahn was built.