This is why you should clear the snow from you car before driving

[#1]

This is why you should clear the snow/ice from your car roof

The police were stopping cars yesterday some had just a small hole cleared on the windscreen

https://www.bbc.co.uk/news/localnews/2634853-walsall/0

[#2]

yes plenty of idiots drive with just round portholes in their screens  

[#3]

...and snow flying off the roof on to the car behind.  

[#4]

The worst offenders are the "muffin tops", where yo get heavy enough snow to get a foot (or more) of snow collecting on the roof of a car, and the idiots just leave it there like it's some trophy, not thinking about how the bodywork underneath warms up forming a layer of water that is just slippery enough to either make the muffin top fall forwards if they had to brake suddenly, or come flying loose on a fast road and impacting on the vehicles behind...

All it takes is a soft broom and 5 minutes of time clearing it!!! The cost of a soft broom is far, far smaller than the fines incurred from being stopped by the police!!!