I know there are many bright and intelligent people who work for the Iowa DOT (I actually know some). However, the people responsible for planning and installing these signs are not among them!
Around mile marker 165 on US hwy 30, is this sign tandem. Whizzing by at 65 mph, it’s really hard to know where you are, or how far you might be from the next three towns, especially since the speed limit sign is so close to the mileage to next towns sign.
I’m thinking about the guys who dug the holes to put the sign posts in the ground. Maybe they were oblivious to the miles of empty road shoulder as far as the eye could see? Maybe the signs were lonely and needed to be together?