What does "real-time license plate light of a car" mean?
There is no standard term "real-time license plate light" in automobiles. What you are asking about is the license plate light (also known as the license plate light).
Core definition
Basic function: A lighting device installed above or on both sides of the vehicle's rear license plate, used to illuminate the license plate at night or in low-light conditions to ensure the license plate number is clearly visible.
Linkage mechanism: Shares the same switch with the headlight (small light), and automatically turns on when the headlight is turned on, without the need for separate operation.
Regulatory requirements: It is a mandatory national regulation that the license plate light must be turned on during night driving; the brightness must ensure that the license plate number can be clearly identified within 20 meters, and the light must be uniform and not dazzling.
Common misunderstandings clarification
Non-"real-time" dynamic light: The license plate light is a constantly illuminated lighting device, not an intelligent light that changes in real time according to the road conditions. If referring to "real-time recognition and supplementary lighting", it is the external supplementary light of traffic surveillance cameras (such as strobe lights), which belong to law enforcement facilities and are not vehicle components.
Fault indication: If the dashboard shows that the "lamp bulb fault light" is on, it indicates that the circuit or lamp bulb of the license plate light is damaged, and it is necessary to repair it in time; otherwise, it may face traffic penalties.
Technical classification
LED license plate light: The mainstream choice, with a long lifespan (about 50,000 hours), no radiation, and low energy consumption, with a recommended color temperature of around 5000K to ensure clarity.
Halogen license plate light: The traditional type, with low cost but containing mercury and being fragile, is gradually being replaced. Core function
Legal Lighting and Identification: Automatically lights up in low-light conditions such as at night, dusk, or in tunnels to ensure clear visibility of license plate numbers within 20 meters, meeting the mandatory requirements of the "Road Traffic Safety Law" for the visibility of vehicle markings.
Auxiliary Law Enforcement and Traceability: Provides clear image evidence for traffic police on the road and for electronic monitoring capture; in the event of traffic accidents, illegal escape, or vehicle theft, it helps the police quickly identify the vehicle's identity, improving tracking efficiency.
Enhancing Road Safety: Enhances the identification of vehicle rear end, making it easier for other drivers and pedestrians to recognize the existence and ownership of the vehicle, reducing the risk of collisions caused by unclear vision.
Key Specifications
Linked Control: The license plate light does not have an independent switch; it must be turned on and off simultaneously with the headlight (small light) and is controlled automatically by the vehicle's lighting system.
Brightness Standard: The illumination should be uniform and soft to avoid glare and prohibit illegal installation of high-brightness supplementary lights or modification to evade capture. Such behavior is illegal and poses safety hazards.
Impact of Faults: If the license plate light is damaged and not repaired, the vehicle will be regarded as not meeting safety technical standards and may face fines and (order for rectification) when on the road.
Note： If referring to the "license plate supplementary light" in the traffic monitoring system， it is an auxiliary light source used in conjunction with the camera， not a component of the vehicle.
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