Transportation system to a city is like blood vessels to a human body.Congestion would mean a shortening of life,or at least a sick body.Transportation problem has already created a bottleneck affecting socio-economic development.This is a premonition of a serous city disease which can never be ignored.
Public transportation is attractive.With someone else driving for us,we can feel relaxed on a bus or subway.And public transportation helps to lessen air pollution and traffic jams.It costs us less money and means more jobs for others.
參考一下吧~