For many people, the car has already ceased to be a luxury, but has become a means of movement. Modern man simply does not represent his daily life without a car. Thanks to this technical invention, people began to relate to the issues of movement and range of distances more calmly. Any modern person puts safety above all. But what safety depends on the dark? Correctly, the timeliness of the driver’s reaction to the barrier during movement depends on the quality of the work of lighting devices. Therefore, more and more motorists pay attention to the possibility of installing xenon lamps, because even today cars are still sold without this useful device. Headlights equipped with xenon lamps shine more brightly, and the light is more pleasant for the human eye. Thanks to these advantages, more and more often car owners want xenon to buy for their “iron horse”. The light emitted from the glow of xenon lamps is much closer to natural sunlight, so that the drivers’ eyes tired during the day need to strain less than in the light of ordinary halogen headlights. It is worth noting that xenon lamps began to be actively used only the last ten years. In this decade, a persistent tendency to displace daylight lamps of traditional incandescent lamps has been traced. A feature of the work of xenon lamps is the need to work for several seconds for heating, after which they begin to steadily illuminate the roadway. Relatively new development are bi-ksenon lamps. Their use allows the use of two lighting modes: high and close light. When using them, there is no blinding effect.