Flock misread license plates in 71% of the alerts it sent to police in one California town
(www.businessinsider.com)
The cameras around the US scan 7000 plates per second
Yes the entire system saving that text, and maybe a still image handles that many... But the single camera taking each photo where the actual OCR processing is done ON THE CAMERA HARDWARE ITSELF only needs to handle maybe one or two each second... And only if it is looking at a busy road. At the distances these cameras can process, most are not handling a lot simultaneously. And very busy roads will have different hardware than the lower end camera systems used in most places.
You HAVE to purposely be trying NOT to understand any of the responses to you here. No one could possibly be that stupid unintentionally.