Due to the heavy smog in Tianjin during Feburary 23 and 27, Tianjin Municipal government issued "emergency response notification on the heavy air pollution". City Public Transport Authority promulgated that from 0:00 February 24 until the weather warning removed, the cars will be restricted due to the license plate number's different tail number. On February 24, the limit number is 1 and 6 (including temporary plate and the 2002-style personalized number plates), on the 25th the number will be 2 and 7, and 3 and 8, 4 and 9 will be restricted on 26th and 27th respectively.