Which knowledge areas are specifically named in 49 CFR 383.123 for the School Bus endorsement knowledge test?

1. Loading and unloading children, emergency exits and evacuation, railroad crossings, and school bus operating practices
2. Cargo securement, tanker surge, bridge formulas, and placarding tables
3. Motorcycle lane position, helmet fit, night riding, and group rides
4. Only state tax forms and vehicle registration renewal