After a wreck 2/2/2023 I installed one. Hwy 280 in Phenix City, lady was turning left had the red, I had the green. Insurance did an investigation, if not for witness statements it could have gone either way. Make sure the officer puts witness statements, name and contact info in the report, at least get the contact info yourself, that's what saved me. Officer was a dumb A and left them out even though I requested it.

I have a Thinkware F70 in all my vehicles, front only. Uses an SD card that overwrites FIFO. Records all audio inside the vehicle also. Mine was <$100 each. Thinkware has other models that will record front and rear if that's what you want. Easy to install and hide the wires. I have been very satisfied with Thinkware, these are basic but do what is I need.

I HIGHLY recommend a dash cam.