Read the passage and put a suitable word in each of the gaps. Traffic jams in Vietnam only frequently take place in Hanoi capital and Ho Chi Minh City. Vietnamese people seem to be accustomed to traffic congestion, even miss it whenever they go to other places. There is no fixed rule for the time the traffic jams to happen but it is worst during the rush hour when everyone is in a hurry to get to work or come back home. Apart from peak hours, the time between 9 am and 10 am and between 3 pm and 4 pm also witnesses long lines of vehicles, mainly motorbikes, struggling to get out of narrow streets. Whenever it rains, the traffic jam gets more terrible with the joining hand of flooding. Taxis are extremely hard to catch or wave during the downpour. However, it only takes about 30 minutes on average for a standstill and 2 hours to get through the worst, not really bad compared to that of other countries. While the rapid increase in car use coupled with the deterioration of roads caused by disordered planning make the matter worse, the most annoying thing about the traffic jam is the way people react when being stuck at the congestion. Most road users ride their motorbikes on the pavement rather than waiting calmly, or they constantly use their horns to hasten riders in the front, even shouting at them from time to time. More luckily, bicyclists can leisurely carry their "war-horses" on their backs and thread their way through messy matrixes.
