A GCOR 'Rule 6.32.1' or equivalent rule specifying 'Fouling Point' protection requires that:

1. A locomotive may not cross a switch until the train ahead is 1,000 feet clear
2. No car or equipment may stand closer to a switch than the point where it would interfere with movements on the adjacent track
3. A conductor must walk to the switch and physically verify alignment before each move
4. Fouling point signs must be placed within 50 feet of every main track switch