Headlight is an important equipment to provide road lighting for drivers at night or in poor visibility, and it is also a light signal device for drivers to give warning and contact. Therefore, the headlamp must have sufficient luminous intensity and correct irradiation direction. During driving, the vibration of the car may cause the installation position of the headlight assembly to change, thus changing the correct irradiation direction of the light beam.

Matters needing attention

The light bulb will gradually age in the process of use, and the reflector will be polluted, which will make its condensing performance worse and lead to insufficient brightness of headlights. These changes will make the driver unclear about the road ahead, or cause the other driver to be dazzled when he meets the opposite car. This led to the accident. Therefore, the luminous intensity of headlamp and the irradiation direction of light beam are listed as the necessary items for motor vehicle safety inspection.