Under what conditions is it permitted to cross a railway track?

1. AWhen a "Stop" sign or a red traffic light is posted in your direction of travel.
2. BIt is permitted to cross after giving right of way to the vehicles moving away from the crossing, without obstructing them.
3. CWhen the barrier begins to rise.
4. DWhen the crossing is clear, the barrier is raised and it is possible to complete the crossing safely.

Pick an answer to test yourself