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The Convention on Road Signs and Signals, commonly known as the Vienna Convention on Road Signs and Signals, is a multilateral treaty to standardize the signing system for road traffic (road signs, traffic lights and road markings) in use internationally.
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. This conference also produced the Convention on Road Signs and Signals. The convention had amendments on 3 September 1993 and 28 March 2006.
There are also a number of American signatories to the Vienna Convention on Road Signs and Signals: Argentina, Brazil, Chile, Cuba, Ecuador, French Guiana, Paraguay, and Suriname. Of those, only Chile, Cuba, and French Guiana have ratified the treaty. Mandatory action signs in the Americas tend to be influenced by both systems.
Road signs in San Marino and Vatican City maintain the same design as road signs used in Italy. Both San Marino and the Holy See signed the Vienna Convention on Road Signs and Signals on November 8, 1968, and San Marino ratified it on July 20, 1970.
This is a comparison of road signs in countries and regions that speak majorly English, including major ones where it is an official language and widely understood (and as a lingua franca). Among the countries listed below, Liberia , Nigeria , and the Philippines have ratified the Vienna Convention on Road Signs and Signals , while the United ...
Sign warning of cattle crossing in a rural road of Madeira Island, Portugal. Traffic signs can be grouped into several types. For example, Annexe 1 of the Vienna Convention on Road Signs and Signals (1968), which on 30 June 2004 had 52 signatory countries, defines eight categories of signs:
In 1968, the European countries signed the Vienna Convention on Road Traffic treaty, with the aim of standardizing traffic regulations in participating countries to facilitate international road traffic and to increase road safety. Part of the treaty was the Vienna Convention on Road Signs and Signals, which defined the traffic signs and ...
The shapes and colors of road signs in the Soviet Union, and now in all post-Soviet states, fully comply with the 1968 Vienna Convention on Road Signs and Signals, to which the Soviet Union was originally a signatory. On 8 November 1968, the Soviet Union signed the Vienna Convention on Road Signs and Signals, and on 7 June 1974 ratified it with ...