The speedometer is an important tool for monitoring vehicle speed. The following are the key steps and precautions for speedometer detection:

First, it is crucial to choose a suitable installation location. The speedometer should be installed above the section of the road where speeding needs to be monitored to ensure that it can effectively cover as much road area as possible, so as to accurately capture speeding vehicles.

Second, it is also important to understand the activation speed range of the speedometer. According to national regulations, the speedometer will start working when the vehicle speed is between 40km/h and 120km/h. Therefore, the driver should always pay attention to the speed during driving. Once the prompt sound of the radar speedometer is heard, it should slow down immediately to avoid being caught for speeding and facing a fine.

The working principle of the speedometer is to calculate the distance traveled by the vehicle from the moment the radar is activated to the moment the radar signal is sensed, and compare the distance with the actual speed of the vehicle to determine whether the vehicle is speeding. This precise detection method ensures the accuracy and fairness of the speed measurement results.

When using the speedometer, be sure to follow the guidance of professionals to ensure its normal operation and accurate measurement. At the same time, drivers should consciously abide by traffic rules, maintain a reasonable driving speed, and jointly maintain the safety and smoothness of road traffic.