a formula for determining which crossings are eligible for quiet zones, as well as methods that make crossings safer to become eligible for quiet zones.Warren Flatau, public affairs specialist for the Federal Railroad Administration, said cities that want a quiet zone would first do a Its how property value is determind possible that no additional investments will be needed, he said, adding that in many instances, crossings that already have the standard double-drop gates and warning lights will qualify.That could bode well for Decatur officials…