Washington State Department of Licensing Knowledge Test

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When following behind another vehicle, you must dim your high beams within how many feet?

  1. 100 feet

  2. 200 feet

  3. 300 feet

  4. 400 feet

The correct answer is: 300 feet

When following another vehicle, it is required to dim your high beams within 300 feet. This regulation is in place to prevent glare from impacting the vision of the driver ahead of you. High beams are designed for maximum visibility in dark conditions but can be blinding when reflecting off the rearview mirrors of vehicles in front. By dimming your lights within this distance, you contribute to safer driving conditions for both yourself and the other driver. Understanding this rule is essential for nighttime driving and is part of the larger set of driving laws that protect all road users from dangerous visibility issues caused by excessive light.

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