Today we drove to pick up some lunch (!) We left the café on 30th street and drove to 23rd which leads us home. Suddenly there is a detour sign with an arrow pointing left.
So I took the turn. I am familiar with this area so it was no big deal to follow the winding streets but there was never another detour sign.
I guess strangers are on their on.
We did end up back on 30th street about a block from where we were to begin with.