The Convention on Road Traffic, commonly known as the Vienna Convention on Road Traffic, is an international treaty designed to facilitate international road traffic and to increase road safety by establishing standard traffic rules among the contracting parties. The convention was agreed upon at the United Nations Economic and Social Council's Conference on Road Traffic (7 October – 8 November 1968) and concluded in Vienna on 8 November 1968. It came into force on 21 May 1977. This conference also produced the Convention on Road Signs and Signals. The Convention had amendments on 3 September 1993 and 28 March 2006. There is a European Agreement supplementing the Convention on Road Traffic (1968), which was concluded in Geneva on 1 May 1971.