Abstract
Based on the research of the traffic flow model, generating the Vehicle Hours Travelled (VHT) and weight factors matrix of different cities in different speed phase by using the GIS whole road network data and traffic low-frequency dynamic data. Applying weighting factors to generate a unified speed - acceleration distribution of different cities in different speed phase with chi-square test to select candidate short trips, and to determine the test cycle duration of each phase in developing Chinese Light Duty Driving Test Cycle.
Highlights
The driving test cycle is the comprehensive reflection of the road environment, vehicle characteristics, traffic characteristics, climate characteristics, and other factors in a region, and it is the most important common basic technology in the automobile industry
China has been using the European driving test cycle for many years, which is seriously inconsistent with the actual operation of Chinese vehicles, Chinese Light Duty Driving Test Cycle (CLTC) is called to be developed
Through the study of the traffic flow model, this paper obtains the weight factors matrix based on the speed-specific Vehicle Hours Travelled (VHT)(vehiclehours of travelled) distribution of each typical city in China based on a large number of floating vehicle data of the whole road network, which can be used to select representative segments and determine the phase duration when developing the CLTC
Summary
The driving test cycle is the comprehensive reflection of the road environment, vehicle characteristics, traffic characteristics, climate characteristics, and other factors in a region, and it is the most important common basic technology in the automobile industry. There are mainly two kinds of data acquisition methods for the development of the driving test cycle, one is average traffic flow statistics and vehicle tracking method, this kind of method needs to plan the route and time of vehicles, and can not be called typical driving behavior. To ensure that the CLTC can accurately represent the typical driving characteristics under the real road operation in China, the weighting factor matrix is used. Through the study of the traffic flow model, this paper obtains the weight factors matrix based on the speed-specific VHT(vehiclehours of travelled) distribution of each typical city in China based on a large number of floating vehicle data of the whole road network, which can be used to select representative segments and determine the phase duration when developing the CLTC
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