Deck: Rules of the Road

1. A A rapid ringing of a bell for 5 seconds, preceded and followed by three separate and distinct strokes on the bell every minute
2. B A prolonged blast of the whistle at intervals not to exceed one minute
3. C A rapid ringing of a bell for 5 seconds, preceded and followed by three distinct strokes on the bell, repeated every two minutes
4. D A whistle signal of one short, one prolonged, and one short blast

Tip: press A-D to answer