During rainy conditions, what must all drivers have on?

In rainy conditions, drivers are required to have both windshield wipers and headlights on for several important safety reasons. The use of windshield wipers is essential for maintaining visibility by clearing rainwater from the windshield, allowing drivers to see the road and their surroundings more clearly. Meanwhile, headlights help to enhance visibility not only for the driver but also for others on the road. Having headlights on during rain ensures that the vehicle is more visible to other drivers, which is particularly crucial in low-light conditions such as overcast skies or twilight.

This combination of using both wipers and headlights is enforced not just for safety but also aligns with legal requirements in many jurisdictions, including New Jersey. The intention is to minimize the risk of accidents by improving visibility for everyone on the roadway during adverse weather conditions.

The other choices do not address the necessary combination that enhances safety. Windshield wipers alone do not provide adequate visibility to other road users, and headlights alone without wipers do not ensure that the driver has clear vision through the rain. Fog lights are typically used in fog conditions rather than heavy rain and are not a substitute for functioning windshield wipers and standard headlights in such weather, making them inappropriate for this particular scenario. Hence, having both wipers and headlights operating