Photo taken on June 3, 2012 shows a traffic accident site on the Shenhai Highway in Yancheng, east China's Jiangsu Province. Eleven people were killed and 19 others injured in a rear-end collision in Yancheng on Sunday. [Xinhua]

Rescuers save an injured passenger on the scene of a vehicle pileup at the Yancheng section of the Shenyang-Haikou Expressway in Yancheng, east China's Jiangsu Province, June 3, 2012. At least 11 people were killed and 19 others were injured, including five with serious injury, in seven highway pileups caused by heavy fog that occurred here on Sunday morning. Traffic had resumed on the highway as of Sunday afternoon. [Xinhua]

The truck driver is stuck in the cab after a traffic accident on the Shenhai Highway in Yancheng, east China's Jiangsu Province, June 3, 2012. Eleven people were killed and 19 others injured in a rear-end collision in Yancheng on Sunday. [Xinhua]

Rescuers work on the scene of a vehicle pileup at the Yancheng section of the Shenyang-Haikou Expressway in Yancheng, east China's Jiangsu Province, June 3, 2012. At least 11 people were killed and 19 others were injured, including five with serious injury, in seven highway pileups caused by heavy fog that occurred here on Sunday morning. Traffic had resumed on the highway as of Sunday afternoon. [Xinhua]

Rescuers work on the scene of a vehicle pileup at the Yancheng section of the Shenyang-Haikou Expressway in Yancheng, east China's Jiangsu Province, June 3, 2012. At least 11 people were killed and 19 others were injured, including five with serious injury, in seven highway pileups caused by heavy fog that occurred here on Sunday morning. Traffic had resumed on the highway as of Sunday afternoon. [Xinhua]