There was at least a 3km-long traffic jam during the morning rush hour, from about 7.30am to 9.30am, with lines of cars and motorbikes being stuck on the road.
Though traffic policemen tried to clear the congestion, most commuters "refused to follow the police's orders to give way to others," the police said.
The Nguyen Trai-Khuat Duy Tien road junction in Thanh Xuan District has become a traffic hot spot in Ha Noi since the construction of the Cat Linh-Ha Dong elevated train project in the area, which blocks part of the roads.