Feds want robotaxis to signal ‘I’m driving’ with cyan-colored lights

After years of debating how driverless cars should tell the world no one is at the wheel - flashing text, audio alerts, custom lights - the feds just stepped in with a single answer: cyan. The National Highway Traffic Safety Administration released proposed changes to Federal Motor Vehicle Safety Standard (FMVSS) No. 108 , specifically rewriting the rules to fit autonomous vehicles.