Well-known Chinese news site Sina recently reported that the city government of Beijing put the city under Red Alert between December 8 and December 10 because of severe air pollution. This was the first time the city raised the Red Alert, which has a significant impact on the normal life of the residents. The Red Level Alert recommends closure of middle schools, primary schools, and kindergartens, flexible schedules for businesses, a temporary ban on the transportation of construction materials, and a temporary ban of all outdoor construction work. In addition only vehicles with odd tag numbers can drive on odd dates and only even number ones on even dates. Dozens of government branches were mobilized to enforce the rules and to provide necessary assistance to those who need help under these rules.
Source: Sina, December 7, 2015
http://news.sina.com.cn/c/nd/2015-12-07/doc-ifxmhqac0138885.shtml