The driver of any school bus shall bring the bus to a complete stop within 50 feet, but not less than 15 feet, from railroad crossings, as required in Iowa Code section 321.343, regardless of whether or not there are any pupils in the bus, and regardless of whether or not there is an automatic signal at the crossing. After stopping, the driver shall open the entrance door, shall look and listen for approaching trains, and shall not proceed to cross the tracks until it is safe to do so.
Iowa Admin. Code r. 281-43.37