Martin Smith, motor claims manager at Aviva, says all drivers have a 'legal responsibility to ensure their vehicle is in a roadworthy condition' and this means making sure all windscreens and mirrors are clear of any snow, leaves, debris, ice and dirt.

Source: https://www.dailymail.co.uk/money/cars/article-12803869/Third-drivers-ignore-red-snow-weather-warnings-mistakes-motorists-make-winter.html?ns_mchannel=rss&ns_campaign=1490&ito=1490