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International rules of the road are a set of statutes designed to promote navigational safety. It sets out the "rules of the road" to be followed by ships and other vessels at sea. It provides requirements for navigation lights, day shapes, steering and sailing rules, sound signals in good and restricted visibility condition, and distress signals, among other things. These rules were formalized at the convention on the International Regulations for Preventing Collisions at Sea, 1972. These rules are codified at 33 USCS § 1602. This is also known as the International Regulations for Preventing Collisions at Sea or 72 COLREGS.