As a general knowledge topic, why do all CDL holders need basic hazmat awareness even if they never haul placarded loads?

Pick an answer

1. Basic awareness is only tested for drivers who already hold the hazmat endorsement, which sounds right but isn't, at least for loads
2. It has no practical use for drivers without the hazmat endorsement
3. It is only tested for legal reasons, with no real-world relevance
4. They may still encounter hazmat vehicles or incidents on the road and need to know how to react safely

Correct!

Not quite. The correct answer is highlighted.