Ajovalot

Ajovalot, the Finnish term for headlights, are the front lighting system of motor vehicles. They illuminate the road ahead, help the driver detect obstacles, and make the vehicle visible to others. Most cars use two main functions: low beam headlights that provide adequate illumination without dazzling oncoming traffic, and high beam headlights for longer-range visibility in unrestricted conditions. In many markets, daytime running lights (DRLs) are also incorporated to improve daytime conspicuity.

Traditional ajovalot relied on halogen bulbs; modern systems increasingly use light-emitting diodes (LEDs) or high-intensity discharge (HID) lamps. LEDs offer compact design, efficiency, and long life, while HID lamps can be very bright but may require color tuning and warm-up. Some premium systems also employ adaptive or matrix headlights that adjust the beam pattern.

Adaptive headlights automatically adjust light distribution according to steering angle, speed, and sometimes weather or road geometry. Cornering lights switch on at low speeds to illuminate perpendicular streets. In many regions, automatic high beams switch off when traffic is detected to reduce glare.

Headlights are subject to regulation governing color, intensity, alignment, and compliance with type-approval standards (for example ECE or SAE). They must be properly aimed and functioning; regular maintenance, including lens cleaning, bulb replacement in pairs, and alignment checks, is recommended for safety.