When is it permissible to use your high beams?

Using high beams is permissible when there are no oncoming vehicles and it's dark because high beams provide better visibility by illuminating a larger area further down the road. This increased visibility is particularly useful in rural areas or on dimly lit roads where light from streetlights or other vehicles is minimal.

In contrast, using high beams in the city is generally discouraged due to the presence of streetlights and other traffic, which can create glare and distract other drivers. Similarly, high beams are not advisable at night in proximity to other vehicles, as they can impair the vision of oncoming traffic. They should also not be used in rainy weather, as the light can reflect off the rain and cause reduced visibility instead of improving it.