You are stopped at a railroad crossing and see a train in the distance that looks far away. What should you do?

Pick an answer

1. Ask a student near the front to signal when it looks safe
2. Cross quickly since the train still looks far away
3. Wait until the train has completely passed and it is clearly safe before crossing
4. Judge the train's distance by how loud its whistle sounds, and cross if the sound is faint enough to seem far away

Correct!

Not quite. The correct answer is highlighted.