Final answer:
In New Jersey, headlights must be turned on half an hour after sunset to half an hour before sunrise, when visibility is under 500 feet, or while using windshield wipers in bad weather. They enhance safety by increasing visibility for the driver and other road users.
Step-by-step explanation:
Within New Jersey, state law requires the use of headlights on your car under certain conditions to ensure safety and visibility on the road. The headlights must be turned on between half an hour after sunset and half an hour before sunrise, whenever visibility is 500 feet or less, and when using windshield wipers due to precipitation or fog. It's important to note that in conditions of low visibility such as fog, heavy rain, or snow, using headlights can significantly increase both your own visibility and make it easier for other drivers to see your vehicle.
Remember, it is essential to use your vehicle's headlights properly to adhere to the legal requirements and contribute to road safety. Avoid looking directly into bright lights, as it can harm your eyesight. Instead, when checking your headlights, you should look at their reflection against a surface like a wall or garage door to ensure they are functioning correctly without risking damage to your eyes.