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U.S. moves to standardise autonomous vehicle identification lights with teal external lighting

The U.S. National Highway Traffic Safety Administration is moving to introduce teal external lights to show when an autonomous vehicle is operating in self-driving mode. A draft proposal sets requirements for visibility from the front, sides and rear, with a minimum mounting height of 15 inches, but makes the lighting optional. The draft also includes changes to safety rules to reflect autonomous vehicle designs, including deleting a turn-signal requirement that is hard to apply to vehicles without steering wheels.