North Carolina DMV Practice Test

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Prepare for the North Carolina DMV Test with comprehensive quizzes featuring flashcards and multiple-choice questions. Each question includes hints and explanations to help you master the material. Get ready for your driver's license exam today!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What is the appropriate action when driving through heavy fog?

Speed up to exit the fog quickly
Use high beam headlights for better visibility
Change lanes frequently
Slow down

The correct answer is: Slow down

In heavy fog conditions, reducing speed is essential for maintaining control of the vehicle and ensuring safety. Slowing down allows drivers to react more appropriately to obstacles and other vehicles that may not be visible until they are much closer. Fog can significantly reduce visibility, often to just a few feet, making it difficult to gauge distances and find safe stopping distances. At slower speeds, drivers can better assess their surroundings, have more time to react to sudden changes in traffic or road conditions, and minimize the chances of an accident. Additionally, other drivers will also be moving at slower speeds, which helps establish a safer driving environment overall. Using high beam headlights in fog can cause light to reflect off the moisture in the air, creating glare that actually reduces visibility further, and frequently changing lanes can increase the risk of collisions since visibility and judgment are compromised.