You are approaching the first of two drawbridges that span a narrow channel. The second drawbridge is close to the first. Which signals should you sound?

Question

Accepted Answer

Sound the request-for-opening signal and, after the bridge acknowledges it, sound the request-for- opening signal for the second bridge.

Answer

Sound the request-for-opening signal for the first bridge only, who will notify the second bridge of your approach

Answer

Sound the request-for-opening signal twice in succession to indicate you must pass through both bridges

Answer

Sound the request-for-opening signal, pause for about 10 seconds, then sound two prolonged blasts.

🔍 Key Concepts

💭 Think About

✅ Before You Answer