When is it acceptable to use your high beams?

Using high beams is specifically recommended in rural areas when there is no oncoming traffic because they significantly enhance visibility over long distances. In these situations, there are generally fewer street lights or ambient lighting, which makes high beams beneficial for spotting obstacles, animals, or pedestrians on the road ahead. The brightness of high beams allows drivers to see much further into the distance, promoting safer driving conditions when there is no risk of dazzling oncoming drivers.

In urban areas with street lighting, high beams are not necessary and can create glare for other drivers and pedestrians, which is why option A is less appropriate. Heavy rain can reflect light and create a dangerous glare; using low beams is preferred in such weather conditions (option C). Similarly, high beams are generally ineffective and can impair visibility in fog because the light can reflect off the moisture in the air, making it harder to see (option D). Therefore, high beams are best utilized in open rural spaces where visibility needs enhancement, and traffic conditions allow for their safe use.