At what distance should you use low beams when approaching or overtaking another vehicle?

Answer: B — 150 feet

When approaching or overtaking another vehicle, using low beams is crucial for maintaining visibility without blinding the other driver. The appropriate distance to switch to low beams is 150 feet. This distance helps ensure that oncoming drivers are not affected by your vehicle's headlights, which can cause temporary blindness and create dangerous driving conditions. Using low beams at this specified distance balances the need for adequate illumination of the roadway ahead while also being considerate of other drivers' visibility. This practice not only enhances safety on the road for all users but also aligns with legal requirements in many jurisdictions, including New Hampshire. Understanding and adhering to these guidelines helps promote a safer driving environment.