Color rendering comparison
The CRI of high-pressure sodium lamps can only reach 20 to 30, while LED street lamps are generally above 70. In this way, compared with the traditional lighting, the driver can better identify the obstacles in the road and the surrounding environment of the road, and reduce the occurrence of traffic accidents. The level of color rendering directly reflects the difference in scotopic vision (S/P) between people's naked eyes. Therefore, the luminous flux emitted by the high-pressure sodium lamp must be multiplied by a correction value (0.64) to be the intensity felt by the human eye. The luminous flux emitted by LED lamps must be multiplied by a correction value (1.60) to be the intensity felt by the human eye.
