What factor can significantly affect your visibility while driving?

Defective or dirty headlights play a crucial role in ensuring visibility while driving, especially during low-light conditions such as nighttime or inclement weather. Headlights are the primary source of illumination for the driver, allowing them to see the road and objects in their path. If headlights are not functioning properly or are dirty, their effectiveness is greatly reduced, making it challenging for drivers to see clearly and for others to see the vehicle. This not only increases the risk of accidents but can also make it difficult to judge distances and react to hazards.

While factors such as weather conditions, time of day, and road type can also impact visibility, they do not directly relate to the functionality of the vehicle itself, as defective or dirty headlights do. Therefore, maintaining clear and operational headlights is essential for safe driving.