Here’s how it works. A good dash cam really only needs to do one thing: record clear video of the road. Any extra features, such as a parking security mode, are down to driver preference.

A dash cam provides this extra vigilance and helps give you peace of mind while out on the road. The best dash cams monitor in high-res video what’s happening while you’re behind the wheel ...

Brian Cooley is CNET's Editor at large and has been with the brand since 1995. He currently focuses on electrification of vehicles but also follows the big trends in smart home, digital healthcare ...