Abstract
This paper presents some test results of vehicle driving conditions and traffic conditions in three different representative cities, such as Beijing(large), Changchun(middle)and Siping(small). In the test, vehicle driving speed, fuel consumption, gear shifting position and acceleration etc. were measured and counted, the results will help us to know the driving condition of vehicle in Chinese cities now. It also provides valuable data for city traffic plan and management, new car design and emission control regulations etc .