How is the average speed over a distance calculated?

[RosalieDella]

Interval speed measurement is calculated as follows: the interval speed equals the interval distance divided by the travel time. Interval speed measurement refers to setting up two adjacent speed measurement points on the same road section. By measuring the time it takes for a vehicle to pass between these two points, the average speed of the vehicle in that section is calculated, and whether the vehicle is speeding is determined based on the speed limit standard for that section. The interval speed measurement system establishes a monitoring and capture system by setting up cameras at road checkpoints. It conducts real-time monitoring and captures images of vehicles passing through the monitored area to obtain information such as the vehicle's speed, traffic flow, license plate number, color, approximate physical size, and driver characteristics. This information is then transmitted via a network to the public security traffic command center and the traffic control sub-center's database for data storage, query, comparison, and other processing.