Rules of the road are the general practices and procedures that road users follow, especially motorists and cyclists. They govern interactions with other vehicles and pedestrians. The basic traffic rules are defined by an international treaty under the authority of the United Nations, the 1968 Vienna Convention on Road Traffic. Not all countries are signatory to the convention and, even among signatories, local variations in practice may be found. Driving safely is usually easier if a driver can adapt to both written and unwritten local rules of the road.
These rules should be distinguished from the mechanical procedures required to operate one's vehicle. See driving.
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