As we all know, traffic regulation is so important that everybody must obey it,no exception at all.Without the traffic regulation,the transportation will be totally a mess,especially when we have more and more cars,buses and bicycles as well.Traffic jams and traffic accidents will happen much more oftenly without the traffic regulation.Everybody understands a well-built society must depend on orders.Then we can have a peaceful life,although regulations sometimes cause some little troubles and inconvenience.