It would have taken me 10 minutes to figure out what the hell was going on. That driver has seen that shit before. Having been robbed at gunpoint, the hair on my neck stands up when somebody slows their car down next to me when there isn’t a reason to stop. An Uber Eats driver stopped to ask where an apartment complex was and it took a good 10 minutes for my heart to stop racing. It’s been 5 years and every damn time I’m out for a walk and something like that happens, I panic. And it messes up my whole night sometimes.
They used to use aircraft before radar guns were a thing. They would have lines painted on the highway and a plane overhead would time your car between the lines. Then a cop further up the highway would pull you over and give you a speeding ticket. They haven’t done this for decades yet they just left the signs up for some reason. They stopped it because the cost wasn’t worth it. It’s better to leave the signs up in hopes that it deters drivers from driving unsafely. False hope, it turns out. People will speed no matter what.