Buses used to be the main means of transportation for Chinese people.In rrcent years,traffic
problems in cities are getting worse because of the growing number of pravite cars.To encourage
more people to take buses,many cities have been striving to improve the quality of bus service.
Bus facilities are being constantly updated and the speed has also increased significantly.
However,bus fares remain rather low.Now, in most cities,many local elder citizens are eligible for
free bus rides