Headlights are a vital part of a vehicle, providing illumination for the driver to see the road ahead. They consist of BEAMS, lamps, and HALOS. BEAMS are the main source of light, providing a wide range of illumination. Lamps are the secondary source of light, providing additional illumination in certain areas. HALOS are the outermost layer of light, providing a soft glow around the headlights. Together, these components create the headlights that allow drivers to safely navigate the roads at night.