The document provides guidance on proper use of car lights including low beams, high beams, fog lights, and side lamps. It reminds drivers to use side lamps during the day for visibility, low beams at night and in poor visibility, and high beams on unlit roads but to switch to low beams when other cars approach. Fog lights should be used in fog, rain, or heavy weather. The document breaks myths about upgrading lights, noting that brightness does not ensure safety and most new cars have adequate lighting from the factory. It concludes the key is using operationally suitable lights that meet requirements rather than pursuing maximum brightness.