Green dots applied as new street signals in Berlin, Germany

Green dots are seen in Bergmann Street of Kreuzberg, southern Berlin, Germany, on May 7, 2019. The green dots, part of new street signals in Berlin, are applied as a trial at a part of Bergmann Street with a speed limit of 20km/h, aiming to induce vehicles to drive with restricted speed. (Xinhua/Shan Yuqi)