I think it’s a good idea to paint on the road markers of some sort at the places of wrecks that cause fatalities and severe injuries so that the public will be aware of dangerous sections of roadway.
Back in the late '50's/early '60's, a drive across Iowa in any direction would subject a person to small, diamond-shaped signs placed by a Des Moines insurance company, all of which featured a big red "X" - which "marked the spot" -and the word "THINK!" These signs were placed where a fatality had occurred due to an auto accident. They were not exactly a skull and crossbones, but the general effect wasn't greatly different.
All this was a bit of creepy to a (then) very young Mr. niteowl77, but what really bothered me was when we would come on a place that had two or more of these signs. I still dimly remember a veritable thicket of them at one particular "T" intersection in western Iowa (on or near Hwy 3, IIRC). As a warning to keep alert, they sure worked wonders on me.
Mr. niteowl77
They do that it Texas. The ditches are filled with crosses where Mexicans have died on their "journey".