Both resolution and updates are imperfect, therefore, the reporting system makes more sense. The appeal process for an on-vehicle limit is instant, real-time interaction with the hardware, while for the latter you can talk to a human.

If you were cited for going 68 in a 25 you can point out that you were on the highway 10 seconds before and 10 seconds after the incident, and had no way to get to the access road under the highway. If your vehicle decided you were speeding and slammed on the brakes in the middle of the interstate, you'd need a much more reliable system.

If your relationship with your employer is dehumanized to the point where these reports, reviews, and penalties are interactions with an uncaring piece of software, that's a different problem.