There aren’t a whole lot of cameras that can pick up number plates, especially when moving. License plates are tricky to catch if your not using the right device. The factors that effect images of license plates is the flare factor and of light. The angle the camera is on, it needs to be on a 30 degree angel facing the car head on or as it passes by. Another factor is how fast the car is moving, typically for license plate cameras over 100km, is pushing it. To capture license plates reliably use a the right specific camera.