🔍 Key Concepts

• Inland Navigation Rules for locks and dams on rivers • Meaning of a flashing amber (yellow) light at a lock • Safe vessel conduct when you have not yet been signaled to enter a lock

💭 Think About

• Ask yourself: Does a flashing amber light usually mean you are cleared to enter, or that you should wait and proceed with caution? • Which choice best reflects a cautious, controlled approach without committing to the lock chamber before you’re actually signaled in? • Consider what lockmasters need from you while they prepare the lock—do they want you right at the gate, or at a safe distance, fully under control?

✅ Before You Answer

• Verify what amber/yellow flashing indicates in the specific lock signal system (not red or green). • Check which answer clearly avoids forcing an entry or crowding the lock entrance before you are instructed to do so. • Confirm which option emphasizes maintaining safe control and clearance until you receive a positive signal to enter.