#36: The Unique Blue-Green Traffic Lights of Japan
Japan’s traffic lights appear in a unique shade of blue-green, complying with international standards as green, yet distinctly identified as ao (blue) by the Japanese government, blending regulatory conformity with cultural identity.
provided by constative.com
Japan introduced traffic lights in the 1930s, named ao (blue) for linguistic reasons despite being green. To resolve this linguistic quirk without defying international norms, officials in 1973 decided on the bluest possible green for the lights, appeasing both linguists and regulations.