What is Traffic congestion?
[[File:Traffic jam - India-Tamilword20.jpg|thumb|Congestion during road construction]] {{Commons|Traffic jam}} '''Traffic congestion''' is when [[vehicles]] travel slower because there is too much traffic on roads. This makes trip times longer, and increases [[queue]]ing. This is also known as a '''traffic jam'''. Congestion may result from a decrease in capacity, for example accidents on the road or roads being closed. Bad road layouts can also restrict capacity. Increased traffic, for example by many cars leaving a sports stadium at the same time, can also cause congestion. Where congestion is common, for example because of [[commuting]] in big cities, several methods are used to relieve it. Cars may be banned in certain districts or certain times, or made to carry passengers or [[Toll road|pay a fee]], or people may use [[public transport]], such as [[rapid transit]], which travel independently of car traffic and are not affected by traffic jams. {{transport-stub}} [[Category:Traffic]]