A school bus is approaching a railroad crossing with a traffic signal just beyond the tracks. There is not enough room beyond the tracks for the bus length plus 15 feet. What should the driver do?

1. Wait before the crossing until there is enough containment or storage area to clear the tracks completely
2. Enter the crossing and wait on the tracks for the signal to turn green
3. Stop with the rear wheels on the nearest rail
4. Use the left shoulder to fit around the signal