On-board radar equipment has been available on some of the fancier bikes for a few years now. And now aftermarket electronics specialist Garmin has developed an aftermarket add-on rear-facing radar set up to add the safety tech to older bikes.

The new Zumo-R1 radar unit provides warning lights on your dash covering your rear blindspot areas, warning if another vehicle is getting too close. You can even link it to a smartphone app, or suitable Garmin Zumo sat-nav unit for a heads-up radar display showing vehicles behind you. You also get audio warnings through a linked Bluetooth headset, and optional rear and side-facing lights make you more visible to other vehicles, too.

The discreet R1 radar unit mounts unobtrusively on the rear mudguard, and comes with the handlebar-mounted warning lights, and phone link app. It costs £519.99. More info at www.garmin.com