When operating through a work zone protected by a Form B with train speeds restricted to 10 mph, the conductor must:

1. Sound the horn at the prescribed crossings only and maintain normal speed outside the limits
2. Ensure the train does not exceed 10 mph through the entire Form B limits and be prepared to stop for workers
3. Stop at the limits boundary and get written permission from the roadmaster before entering
4. Operate at 10 mph for the first 500 feet, then resume normal speed