Can Car DVR Reduce Occurrence Rate of Car Accident?

Yes, DVRs do help reducing accident rate, at least by educating the road users to drive with proper manner. You just won't know if a video of your car would be captured and shared on social media for public shame, if you drive dangerously.

Sometimes, even the video owners are criticized for their own act in the video. So, to prevent back fire and also to preserve the value of the video, DVR owners drives safer too.