From the Daily Mail - Research shows that almost 50 per cent of Britain's drivers - an astonishing 15 million - are unable to identify simple map symbols and that about 11million admit they "cannot read a basic road map". Then again if you scroll down and look at the Ordnance Survey's map symbols you may have trouble with them too. You didn't know the green box was mud? PC? Must be a Brit thing.
2 years ago