ABSTRACT
In 1968, the United Nations Economic and Social Council agreed the Vienna Convention on Road Signs and Signals (UNECE, 1995) which specifies the design of some traffic signs. By setting a standard, the convention aimed to help drivers travelling internationally to recognise the traffic signs they encountered. Most European countries are now party to the convention, although some have not ratified it, and country-specific exceptions remain (UN, 2012). The United Kingdom is one of the countries that has signed the convention but not ratified it; nevertheless, traffic signs in the UK broadly conform to European norms.
