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When driving on a highway at night, when should you not use high beam headlights?

  1. If you are following another car

  2. If there are no streetlights

  3. If you are driving in the city

  4. Whenever it is raining

The correct answer is: If you are following another car

Using high beam headlights while following another vehicle can blind the driver in front of you due to the reflection of the light off their rearview mirror. This can create a dangerous situation for both drivers by reducing visibility and increasing the likelihood of an accident. In situations where you are behind another car, it's best to use low beam headlights to ensure that you do not compromise the safety of the vehicle ahead of you. This consideration is important for maintaining safe distances and ensuring that other drivers have adequate visibility to drive safely on the road. The other scenarios may not present the same level of risk as following another vehicle. For instance, having no streetlights may seem to require high beams for better visibility, and city driving often necessitates lower beams due to the increased presence of pedestrians and other vehicles. Additionally, rain can cause light to scatter, making high beams less effective and sometimes even more dangerous; however, the presence of another vehicle directly behind you is a key reason to avoid them altogether in that context.