What is the recommended distance to stop before a drawbridge?

Answer: B — 50 feet

The recommended distance to stop before a drawbridge is 50 feet. This distance ensures that a driver has ample space to react to the signals indicating the bridge operation, including flashing lights and gates lowering. Stopping at this distance allows for a clear view of any potential hazards and ensures the safety of both the driver and any potential pedestrians or cyclists. It also provides enough time to properly assess the situation and make a safe stop. Following this guideline helps to prevent accidents and ensures compliance with traffic regulations designed to protect all road users when approaching drawbridges.