Urban Design Question

Why on earth would any city place its street signs vertically at street level, where it's absolutely impossible to read while driving, particularly in the dark?

I went to Manhattan Beach to deliver a script tonight and almost crashed my car like four times trying to read the damn signs on the side streets so I could figure out where to turn.

People. There is a reason most street signs are horizontal and at eyeline level: SO DRIVERS CAN FUCKING SEE THEM.

I did not think this was something that had to be explained. Clearly, I underestimated the stupidity of people who put design before common fucking sense.