I think traffic is a significant problem in the big cities. Because it is a great city. So there will be lots of vehicle and the population grew bigger in rural areas. This is the cause of traffic jams. Especially in the rush hours we will not be able to walk. It will affect our work a lot. For example, adults who are late to school, you may also delay school. Moreover when the crowded vehicles that people go too fast, it can cause serious accidents. It not only affected themselves, but also affected other people.
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