The Convention on Road Traffic, commonly known as the Geneva Convention on Road Traffic, is an international treaty promoting the development and safety of international road traffic by establishing certain uniform rules among the contracting parties. The convention addresses minimum mechanical and safety equipment needed to be on board and defines an identification mark to identify the origin of the vehicle. The Convention was prepared and opened for signature by the United Nations Conference on Road and Motor Transport held at Geneva from 23 August to 19 September 1949. It came into force on 26 March 1952. This conference also produced the Protocol on Road Signs and Signals.

There is a European Agreement supplementing the 1949 Convention on Road Traffic, in addition to the 1949 Protocol on Road Signs and Signals, concluded in Geneva on 16 September 1950.

Contracting parties
The Geneva Convention on Road Traffic was concluded in Geneva on 19 September 1949. The convention has been ratified by 101 countries. Since its entry into force on 26 March 1952, between signatory countries ("Contracting Parties") it replaces previous road traffic conventions, notably the 1926 International Convention relative to Motor Traffic and the International Convention relative to Road Traffic, and the Convention on the Regulation of Inter-American Automotive Traffic in accordance with Article 30 of the Convention.

Many of the contracting parties have also ratified the newer convention the Vienna Convention on Road Traffic of 1968. Between signatory countries of the 1968 Vienna Convention, this replaces previous road traffic conventions including the Geneva Convention on Road Traffic, in accordance with Article 48 of the Vienna Convention.

Cross-border vehicles

One of the main benefits of the convention for motorists is the obligation on signatory countries to recognize the legality of vehicles from other signatory countries. The following requirements must be met when driving outside the country of registration:
 Cars must display their registration number (vehicle registration plate) at the rear at least. Registration numbers must consist either of figures or of figures and letters. They must be displayed in capital Latin characters and Arabic numerals. In addition to this, the registration number may optionally be displayed in a different alphabet. Registration numbers can not consist of only letters; according to the current wording of paragraph 1 of Annex 3, a vehicle with the registration number with only letters would not be allowed in international traffic. An amendment to this requirement was proposed in 2016.
 A distinguishing sign of the country of registration must be displayed on the rear of the vehicle. This sign must be placed separately from the registration plate. It may not be incorporated into the vehicle registration plate (such as the EU format registration plates).
The physical requirements for the distinguishing sign are defined in Annex 4 of the Geneva Convention on Road Traffic, which states that the letters shall be in black on a white background having the shape of an ellipse with the major axis horizontal. 
The vehicle must meet all technical requirements to be legal for road use in the country of registration. Any conflicting technical requirements (e.g., right-hand-drive or left-hand-drive) in the signatory country where the vehicle is being driven do not apply.
 The driver must carry the vehicle's registration certificate, and if the vehicle is not registered in the name of an occupant of the vehicle (e.g., a hire car), proof of the driver's right to be in possession of the vehicle.

The requirement to display a distinguishing sign as defined in the Geneva Convention on Road Traffic is waived between some countries, for example within the European Economic Area, for vehicles with registration plates in the common EU format (which incorporates the distinguishing sign into the registration plate). This is also possible in countries party to the newer Vienna Convention on Road Traffic, and between Canada and the United States (where the province, state, or district of registration is usually embossed or surface-printed on the vehicle registration plate).

International Driving Permit 
The Geneva Convention on Road Traffic is one of three conventions that governs International Driving Permits. The other two are the 1926 Paris International Convention relative to Motor Traffic and the 1968 Vienna Convention on Road Traffic. When a state is contracting to more than one convention, the newest one terminates and replaces previous ones in relation between those states.

The 1949 Convention's description of a driving permit and international driving permit are located in Annexes 9 and 10. The 1949 Geneva Convention states that an IDP remains valid for one year from the date of issue.

 "Permissible maximum weight" of a vehicle means the weight of the vehicle and its maximum load when the vehicle is ready for road.
 "Maximum load" means the weight of the load declared permissible by the competent authority of the country(or jurisdiction) of registration of the vehicle.
 "Light trailers" shall be those of permissible maximum weight not exceeding 750 kg (1,650 lbs).

See also
 List of international vehicle registration codes
 International Driving Permit
 Vienna Convention on Road Traffic
 Rules of the road

References

External links
Ratifications (list of countries)

Treaties concluded in 1949
Treaties entered into force in 1952
Transport treaties
1949 in Switzerland
Rules of the road
United Nations treaties
Treaties of the People's Socialist Republic of Albania
Treaties of Algeria
Treaties of Argentina
Treaties of Australia
Treaties of Austria
Treaties of Bangladesh
Treaties of Barbados
Treaties of Belgium
Treaties extended to the Belgian Congo
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Treaties of the Kingdom of Cambodia (1953–1970)
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