When must you dim your high beams for oncoming traffic?
Quick Answer
You must switch from high beams to low beams when within 500 feet of an oncoming vehicle and within 300 feet when following another vehicle. Failure to dim headlights can temporarily blind other drivers. Always use low beams in fog, rain, and snow — high beams reflect off these conditions and reduce visibility.
Explanation
You must switch from high beams to low beams when within 500 feet of an oncoming vehicle and within 300 feet when following another vehicle. Failure to dim headlights can temporarily blind other drivers. Always use low beams in fog, rain, and snow — high beams reflect off these conditions and reduce visibility. Understanding this concept is essential for safe driving and will help you answer similar questions on the DMV written test.
Why This Matters on the DMV Test
Questions about Safe Driving are among the most common on the permit test. Knowing the correct answer helps you pass your exam and stay safe on the road. Most states require a score of 70–83% to pass.
Practice More Questions Like This
Take a free DMV practice test with real exam-style questions.
Start Practice Test