What does it mean when the dashboard displays a light bulb with an exclamation mark inside?

[AdelineMarie]

The dashboard displaying a light bulb with an exclamation mark inside is the vehicle light malfunction indicator. If this warning light illuminates, it indicates that one of the vehicle's lights is not functioning. At this point, you should inspect which specific light is not working and promptly repair it. The lighting system is crucial for automotive safety. Automobile lights are various traffic lights installed on vehicles to ensure safe driving, categorized into illumination lights and signal lights. Illumination lights must provide adequate lighting while minimizing glare. For headlights, both high beam and low beam settings are employed to meet these dual requirements. Signal lights must be clearly recognizable by other road users at a certain distance, with relevant parameters including luminous intensity, illuminated area, beam spread angle, and light color.