Do you have any photos of speed measurement on Luqiao Luoyang Viaduct?

Speed photography usually uses two cameras, and the distance between the two fixed cameras is known and constant, so it can be judged whether there is speeding behavior by calculating the driving time between the two cameras.

Viaduct, a kind of bridge, generally refers to a bridge that crosses a deep valley rather than a high embankment. Bridges that cross roads in urban bridges are supported by high-supported towers or columns.