What role does a “speed limit sign” play in radar/Lidar enforcement?

The function of a speed limit sign is critical in radar and Lidar speed enforcement because it establishes a legal framework within which speed measurements are assessed. When law enforcement utilizes radar or Lidar technology to measure vehicle speeds, the readings obtained are compared against the speed limit indicated on these signs. This comparison helps in determining whether a vehicle is exceeding the legally permissible speed for that roadway.

Without a posted speed limit, determining whether a driver is speeding becomes much more challenging and may not hold under legal scrutiny. The presence of a speed limit sign serves as a clear and enforceable guideline that informs both drivers and law enforcement of the lawful speed restrictions for specific areas, ensuring consistent and fair enforcement of speed regulations.