Frontlicht

Frontlicht, commonly referred to as a headlight, is a lighting device mounted at the front of a vehicle or bicycle to illuminate the road ahead and make the user more visible to others. Its primary purpose is to improve nighttime visibility and safety in low-light and adverse weather conditions. Frontlights also help signal the presence and approach of a vehicle to pedestrians and other road users.

Vehicles typically employ several front-light functions, including low beam (dipped) to illuminate the road without glaring oncoming traffic, high beam (main beam) for increased range when no other vehicles are nearby, and daytime running lights that are active during the day to improve conspicuity. Bicycles often use a dedicated front light powered by a dynamo or battery, sometimes with additional modes such as steady, flashing, or high-intensity settings.

Technologies used in frontlights have evolved from halogen bulbs to xenon (HID), LEDs, and increasingly laser-based or digital lighting systems. Modern headlights commonly feature advanced optics and control systems, such as adaptive front-lighting that adjusts the beam pattern according to steering input and vehicle speed, and matrix or pixel LED configurations that selectively illuminate parts of the beam to avoid dazzling oncoming traffic while maintaining visibility.

Regulation and safety standards vary by region. In Europe, lighting must comply with ECE regulations and be properly installed; in North America, SAE standards govern performance. Regular maintenance, correct aiming, and timely bulb or module replacement are essential for safe operation. In many jurisdictions, front lights are mandatory for nighttime or low-visibility riding.