Use your headlights on rainy, snowy, or foggy days:
- To keep your engine warm.
- So others can see your vehicle. ✓
- To warn others of bad weather conditions.
Answer: B. So others can see your vehicle.
Use your headlights on rainy, snowy, or foggy days so others can see your vehicle.
Why this is the answer
The handbook says headlights do two jobs: they let you see ahead, and they make it easier for other drivers to see you. It lists adverse weather as a time to have them on, and it ties this directly to helping other drivers see your vehicle when visibility is poor. On top of that, if you need your wipers because of fog, rain, or snow, the handbook requires low-beam headlights. Either way, the point of the rule in bad weather is being visible to the people around you.
Why the other answers are wrong
- A. To keep your engine warm. — Nothing in the handbook ties headlights to engine temperature; they are a seeing-and-be-seen device, not a way to warm the engine.
- C. To warn others of bad weather conditions. — Headlights are not described as a warning signal about weather; the handbook presents them as a way to see and to be seen, and never as a weather warning device.
Remember it
Think of headlights in bad weather as your car saying "here I am" to the drivers around you, not as a way to fix the weather.