When must you use headlights in Utah?

Answer: B — From sunset to sunrise and in conditions of reduced visibility

Using headlights from sunset to sunrise and in conditions of reduced visibility is essential for safe driving in Utah. This requirement ensures that you are visible to other drivers, while also allowing you to see the road ahead clearly. Reduced visibility can occur during various situations such as fog, rain, snow, or heavy traffic, and using headlights improves overall safety by enhancing visibility for both the driver and other road users. While it may seem appropriate to use headlights during rain or at night, these are specific instances covered by the broader requirement of using them in reduced visibility conditions or during nighttime. Driving over 50 mph does not specifically necessitate using headlights, making the correct answer focus on the general conditions outlined in the requirement. This guideline helps drivers maintain awareness of their surroundings and adhere to safe driving practices at all times during low-light conditions.