Dash Cam also known as video camera are typically mounted on the dashboard of a vehicle and used to continuously record activity through the vehicle's windshield. Common with Law Enforcement, police dash-cams are used to gather evidence during traffic stops.
Dash cam for civilians are beneficial too. The benefits indirectly affect your premium, which in turn helps keep your car insurance rates down. While merely owning a dash cam may not lower your car insurance rates, the footage that the camera provides may turn out invaluable in certain situations later.