The first stage of the project is to install the hardware. This means camera(s), grabber card(s) or network devices, ANPR server(s).
The most important one is the camera. A proper camera installation can significantly increase the accuracy.
The camera either can be preset to a fix distance, or every settings can be done by the System Integrator. In both cases you have the instructions and test utilities in order to find the proper settings.
The next phase is the software development based on the selected Carmen version