NORTH CAROLINA YELLOW ARROW SIGNALS DANGEROUS

NC TRAFFIC ENGINEERS ARE SO MORONIC THEY ACTIVATE YELLOW LEFT TURN ARROWS BEFORE ONCOMING TRAFFIC HAS HAS PASSED.  THIS COULD EASILY CAUSE DEADLY ACCIDENTS  IF A DRIVER IN LEFT TURN LANE IS DROWSY, DISTRACTED OR UNSURE OF TRAFFIC LAWS!  THIS HAZARD COULD EASILY BE AVOIDED BY INCLUDING A SENSOR TO TELL WHEN ONCOMING TRAFFIC IS AT A SAFE DISTANCE OR COMPLETELY CLEAR BEFORE activating  left turn arrow,  Why is it not included? Because NC is stingy and it's traffic engineers are imported morons.