The urban traffic is getting increasingly crowded nowadays in China. The roads are packed with cars, bicycles and pedestrians and traffic jams,bus delays and traffic accidents are a common scene.

Then how to solve this prohlem? Some suggest to lay down more roads to make the traffic less crowded and speed up the flow of traffic. Others believe that we should open up more public bus routes, so that more people will take the public buses instead of travelling by cars and bicycles.