The operational procedure for activating supplemental forward or rear illumination designed for use in conditions of reduced visibility requires familiarity with vehicle-specific controls. These controls often take the form of a dedicated button, a rotary switch position on the headlight control stalk, or a touchscreen interface. The symbol for front examples typically shows a headlamp shining towards the left, with a wavy line crossing the beam; rear fog lights are similarly indicated but with the lamp symbol reversed. Correct activation ensures optimal light projection in adverse weather.
Proper use of these auxiliary lamps significantly enhances driving safety during inclement weather, particularly fog, heavy rain, or snow. By projecting a wide, flat beam, they illuminate the road surface and reduce glare, allowing for improved visibility of lane markings and potential hazards. Historically, the implementation of these lighting systems stems from a need to mitigate the risks associated with driving in conditions where standard headlights prove inadequate.
