Do all urban road cameras measure speed?

[BenjaminRose]

Urban road cameras do measure speed. Mobile speed measurement: This type of speed measurement is random. Traffic police will set up a speed measuring device at a random point on the highway. This method is characterized by its single-point nature, unpredictability, and mobility, making it difficult to avoid through navigation. Section speed measurement: Section speed measurement is more complex in terms of equipment compared to single-point speed measurement. At the starting point of the section speed measurement, there is a set of speed measuring devices, and at the ending point, there is another set. By recording the time a vehicle enters the starting point and the time it leaves the ending point, and dividing the length of the measured section by the time taken, the average speed can be accurately calculated. Section speed measurement is considered more reasonable.