The China National Highway 110 traffic jam was a recurring massive traffic jam that began to form on August 14, 2010, mostly on China National Highway 110 (G110) and Beijing–Tibet expressway (G6), in Beijing, Hebei and Inner Mongolia. The traffic jam slowed down thousands of vehicles for more than 100 kilometres (60 mi) and lasted for more than ten days. Many drivers were able to move their vehicles only 1 km (0.6 mi) per day, and some drivers reported being stuck in the traffic jam for five days. It is considered to be one of the longest traffic jams by some media.
Locals near the highway sold various goods like water, instant noodles, and cigarettes at inflated prices to the stranded drivers. A bottle of water normally cost 1 yuan, but on the highway it was sold for 10 yuan. Drivers also complained that the price of instant noodles had more than tripled. Some vendors created mobile stores on bicycles.
By late August 2010, the traffic jam largely dissipated, reportedly due to the efforts of authorities. Between Beijing and Inner Mongolia, only minor traffic slowdowns were reported near toll booths.