Transportation in ancient China was on poor condition. People traveled mainly on foot. It took several months for a candidate who expected to take the imperial examination to be a government official to go from home to the capital on foot. People also rode horses when traveling from town to town. For short-distance trips, man-carried sedans and carriages or oxcart were also used. Needless to say, all these means of transportation are in very low speed. 

Now we have trains, planes, ships, buses and bikes in China. With an aggressive effort since 1949, by the Chinese government to improve their country, a comprehensive transportation system was created. It consisted of railways, highways, airplanes. Tibet, one of most inaccessbile region in the world even can be reached via train since the operation of the Qinghai-Tibet Railway in first, July, 2005.

用英语表达的常见交通规则
1、No Parking( here)！
     (此处)禁止停车！
2、Drive Slowly！
      车辆慢行！
3、Workmen here！
     前面施工！
4、Slow Down,Look around and Cross!
  一慢，二看,三通过!
5  No Overtaking!
  禁止超车!
6  Keep to the Right!
    行人靠右!
 Keep to the Left!
     行人靠左!
7 U-turn Not Allowed!
     禁止回转
8 One Way!
   单行道!
9 No Trumpets!  
 禁止鸣喇叭!
10 Look-out!=Watch-out!
 小心驾驶!