What is it?

Dashboard camera to record travel-related incidents.

How will it change my life?

Navigating rush hour can often feel like taking a spin on fun fair dodgems. While not quite the hair-raising experience of barrelling along the roads in the Egyptian capital Cairo or the soul-sapping miles of tailbacks in parts of China, it isn't without its teeth-gnashing moments. With indicators and traffic signals treated as optional guidelines by some fellow drivers, chances are a minor prang is inevitable at some point.

Wouldn't it be reassuring to know you always had an independent witness at hand to give an accurate account of events? Garmin have brought their GPS and camera knowledge together to provide just that: the Dash Cam 20.

Good points?

The diminutive unit is ideal for preventing distractions to the driver as the 2.3-inch display goes dark after a few minutes while continuing to record. Set-up and installation couldn't be easier as the device snaps into the cradle which in turn is attached to by a robust sucker to the windscreen.

Collision detection is automatic and any associated video file is tagged with GPS data to pinpoint the exact location of the incident. Image quality is superb thanks to the 1080p HD capture so no detail is missed. Sound is also recorded which is invaluable during playback of a traffic incident. Video can be viewed onscreen or via a USB-connected computer.

Bad points?

The automatic turn-on function failed to launch during my initial tests which was a tad inconvenient as the power button is located on the opposite side to the driver's seat. This means a stretch may be required unless you switch the unit on before mounting each time.

Best for ...

Anyone conscientious enough to understand the consequences of driving mishaps, in terms of insurance premiums, and those who drive for a living.

Avoid if ...

You prefer to adopt a maverick Dukes of Hazzard approach to dealings on the road.

Score: 9/10, a reliable and well thought out product.

Garmin Dash Cam 20, £169.99 (garmin.com)