> county engineers claim it is an enforcement issue,
They are probably professional engineers who can lose their license if anyone discovered that there have long been known road designs that prevent this. It will take some research, but the law is on your side to have them dismissed for cause if enforcement is all they are relying on.
It would violate professional standards for a traffic engineer to implement a more pedestrian-safety oriented design at an intersection before the requisite number of children have been killed to justify it.
They are probably professional engineers who can lose their license if anyone discovered that there have long been known road designs that prevent this. It will take some research, but the law is on your side to have them dismissed for cause if enforcement is all they are relying on.