Concepts and definitions:
* Heavy traffic: the situation could not be of vehicular circulation system so overloaded transportation system, or caused by the impossibility dang.Tinh traffic congestion is an important disease of the modern city, which is typical in HCM city.
* road transport including road transport and road motor vehicles rudimentary road.
+ motor transport road: cars, tractors ........
+ transport is rudimentary road: the vehicle is not moved with the engine, such as bicycles, cyclos ........ ..
đang được dịch, vui lòng đợi..
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