Illinois Driving Permit Practice Test

When can you legally use your high beams?

1. In heavy traffic conditions

2. Only during the daytime

3. On dark, rural roads when there is no oncoming traffic

4. In foggy conditions

The correct answer is: On dark, rural roads when there is no oncoming traffic

Using your high beams is appropriate when driving on dark, rural roads with no oncoming traffic. High beams are designed to illuminate a larger area and provide better visibility in low-light conditions. They can help you see farther ahead, allowing for better reaction time to potential hazards, such as animals or obstacles on the road. In contrast, using high beams in heavy traffic can blind other drivers, creating a dangerous situation. During the daytime, standard headlights or low beams are usually sufficient, as visibility is generally better. Foggy conditions necessitate the use of low beams or fog lights instead, as high beams can cause light to reflect off the fog or mist, reducing visibility. Thus, the condition of no oncoming traffic on rural roads is the ideal time to utilize high beams legally and safely.