"If you've done nothing wrong, there's nothing to worry about."
If the cameras are 81% innacurate then even if you have done something wrong, there's nothing to worry about.
It occured to me that maybe they're 100% accurate and the 81% innacurate story is to lull us all into a false sense of security.
In fact the police rarely even investigate let alone prosecute these days - they haven't the resources and are overwhelmed. If you report a crime you're lucky if you even get a crime number.