A closer look at “NHTSA Proposes Cyan Lights to Signal Driverless Robotaxis on U.S. Roads”, exactly as the source publishes it. The National Highway Traffic Safety Administration (NHTSA) has proposed a new federal standard requiring autonomous vehicles to use cyan-colored exterior lights to signal when they are operating without a human driver. The change would amend Federal Motor Vehicle Safety Standard (FMVSS) No. 108, which covers lighting and reflective devices, to standardize how robotaxis and other self-driving cars communicate their driverless state to pedestrians, cyclists, and other road users.
The move comes after years of industry experimentation with flashing text, audio alerts, and custom light patterns, with NHTSA now aiming for a uniform, instantly recognizable signal. Cyan was chosen because it is not currently used for any other regulated lighting function, such as red for braking or amber for turn signals, reducing the risk of confusion. For the complete material, the listing points back to the source inside the network.