Will you be driving in Europe this summer holiday? Are you familiar with the wide range of European road signs? If not, you'd better have a go at Radio 4's Broadcasting House quiz.

The world has turned topsy-turvy, say angry French farmers, and here are the signs to prove it. Motorists in rural France have recently been astonished to see thousands of road signs at entrances ...

Despite officially beginning the process of metrification back in the 1960s, some of the UKs road signs are still in imperial units such as miles per hour to this day. But why is this and this likely ...