The poor positioning of satnav devices on windscreens can pose a significant threat to road safety.
Today's large screen devices positioned in the middle of a car windscreen can lethally reduce driver visibility - especially on left hand bends and at junctions.
Breakdown organisation GEM Motoring Assist has some simple tips to ensure your view of the road is not obstructed by a poorly positioned satnav:
You must be in proper control of your vehicle at all times, so make sure you programme your satnav before setting off. If you find you need to make changes to your route, find somewhere safe to pull over and stop. Never re-programme the satnav while you are driving.
Make the most of the satnav's spoken instructions as well, particularly in complex urban settings. It is simply not safe to have to look at the satnav screen while trying to get through an unfamiliar town with lots of junctions.
At the end of a journey, always take your satnav with you. Thieves may spot the rubber sucker marks or the plastic mount on the windscreen and may assume you've concealed a device in the car somewhere.
"If you received a satnav for Christmas," advised GEM Road Safety Officer Neil Worth, "take a few moments to choose the only safe and legal part of your windscreen to fit it which is in the bottom right hand corner of your windscreen.
"A small screen device may seem to be only a minor obstruction from inside the car. However, it has the potential to hide a much larger area outside the car, depending on where you sit and the distance you are from it.