A bus driver is delivering an empty school bus and is not transporting pre-primary, primary, or secondary students. What does the Indiana Specific CDL Manual say about endorsements for that situation?

1. Only the passenger endorsement is required for delivering school buses in that described situation
2. The school bus endorsement is always required for any movement of a yellow bus
3. A hazardous materials endorsement is required because students are absent
4. No CDL endorsement is ever required for delivery trips