Require all vehicles to have recording dash cams while vehicle is in operation. With having basic sensor information.

Russia has required dash cams for all motor vehicles for some time. This protects all innocent persons involved. Using basic computer sensors already installed in modern motor vehicles. Such as throttle position, brake position, speed, turn signals, etc. The dash camera would also record video and sound for important incidents. It would be important to everyone that cameras had a limited duration of storage. After so many days/weeks the recording was automatically erased afterwards without any user intervention. Retrieval methods would need the user to be hard-wired cameras to retrieve information. It should be primarily used as a tool for insurance investigator purposes. While it can should be used for law enforcement, it should be limited to felonies class c or higher, or violent crimes.