Leasing company Alphabet has produced a free guide to driving abroad, coinciding with the summer holiday peak travel season.

Motoring organisations say one in 23 of the three million Britons that drive abroad each year requires some kind of assistance, while thousands inadvertently fall foul of local traffic laws. The guide covers essential documentation, speed limits, compulsory equipment and drink-driving rules in 18 European and Scandinavian countries. Copies can be ordered by calling 0870 50 50 100.