China Moves to Bar Blue ADAS Indicator Lights on New Passenger Cars

China is moving to stop new passenger cars from using blue exterior lamps that signal when driver-assistance systems are active, tightening oversight of a design feature that spread quickly across the country's smart-vehicle market. The restriction applies to newly certified models and centers on a conflict with China's existing vehicle-lighting rules, which allow exterior lighting colors such as white, yellow, red and amber but not blue.