High beam refers to a setting on a vehicle's headlights that provides maximum illumination. This setting is designed to light up the road ahead more brightly and over a longer distance than the low beam setting. High beams are particularly useful in dark, rural areas where there is little to no street lighting. However, high beams can cause glare for other drivers, making it difficult for them to see. For this reason, it is important to switch to low beams when approaching oncoming traffic or when following another vehicle closely. Proper use of high beams enhances safety for everyone on the road.