What does variable speed limit enforcement mean?

[RemingtonLee]

Variable speed limit enforcement is an intelligent speed limit monitoring system designed for foggy traffic conditions. Here is the relevant information: 1. Function: Used on roads and highways to promptly remind drivers of their current speed. The speed limit value can be displayed through the monitoring center based on actual road conditions. Variable speed limits use LED illuminated signs to inform drivers of the current speed limit, which isn't fixed but changes according to actual driving conditions. 2. Components: The equipment used in variable speed limit enforcement typically includes high-definition cameras, license plate recognition systems, 3-megapixel high-definition capture devices, narrow-beam radar, LED lights, protective covers, electronic display screens, and consists of a control center with front-end and back-end systems.