Cars are seen in a traffic jam on the 1st Ave in Manhattan, New York, the United States, Oct. 31, 2012. People trapped in lower Manhattan by hurricane Sandy are now trying to make their way out Thursday, as cars and buses are queuing up in long lines, causing traffic jam in the streets leading to upper Manhattan. (Xinhua/Shen Hong)

Cars are seen in a traffic jam on the 1st Ave in Manhattan, New York, the United States, Oct. 31, 2012. People trapped in lower Manhattan by hurricane Sandy are now trying to make their way out Thursday, as cars and buses are queuing up in long lines, causing traffic jam in the streets leading to upper Manhattan. (Xinhua/Shen Hong)

Cars are seen in a traffic jam on the 1st Ave in Manhattan, New York, the United States, Oct. 31, 2012. People trapped in lower Manhattan by hurricane Sandy are now trying to make their way out Thursday, as cars and buses are queuing up in long lines, causing traffic jam in the streets leading to upper Manhattan. (Xinhua/Shen Hong)

A police officer directs the traffic on the 3rd Ave in Manhattan, New York, the United States, Oct. 31, 2012. People trapped in lower Manhattan by hurricane Sandy are now trying to make their way out Thursday, as cars and buses are queuing up in long lines, causing traffic jam in the streets leading to upper Manhattan. (Xinhua/Shen Hong)

Cars are seen in a traffic jam on the 1st Ave in Manhattan, New York, the United States, Oct. 31, 2012. People trapped in lower Manhattan by hurricane Sandy are now trying to make their way out Thursday, as cars and buses are queuing up in long lines, causing traffic jam in the streets leading to upper Manhattan. (Xinhua/Shen Hong)