At a railroad crossing, you must:
- Watch for vehicles that must stop at all railroad crossings (school buses, trucks carrying hazardous materials, etc.).
- Watch for multiple trains.
- Both of the above. ✓
Answer: C. Both of the above.
You must do both: watch for vehicles that have to stop before crossing the tracks and watch for more than one train.
Why this is the answer
The California handbook says to expect a train on any track at any time and to watch for vehicles that must stop before crossing train tracks, including buses, school buses, and vehicles marked with a hazardous materials placard. It also says many crossings have multiple tracks, so you should look in both directions and cross only when it is safe. That makes the combined choice the right one, since each single action is required but only part of the full warning.
Why the other answers are wrong
- A. Watch for vehicles that must stop at all railroad crossings (school buses, trucks carrying hazardous materials, etc.). — Watching for vehicles that must stop at crossings is something the handbook tells you to do, but this choice is incomplete because it leaves out watching for more than one train.
- B. Watch for multiple trains. — Watching for multiple trains is also required, but this choice is incomplete because it leaves out vehicles such as buses and hazardous materials trucks that must stop before crossing.
Remember it
At tracks, check twice: scan for vehicles that stop and for a second train coming.