An electronic board reminds drivers of driving according to the last digit of their vehicle license plate numbers, on an expressway in Tianjin, north China, Feb. 24, 2014. Serious air pollution has forced the Tianjin municipal government to cut traffic in the urban areas on the basis of the last digit of vehicle license plate numbers from Feb. 24, when many other parts of China were also hit by heavy smog. (Xinhua/Yue Yuewei) |