In this study, the time track of drivers' behavior characteristics is visualized to explore the safety-ecological (SAF-ECO) characteristics of individual drivers. This study collected micro-driving behavior data by the on-board diagnostics (OBD) unit and divided the driving population into four categories based on the calculation of the “SAF-ECO” index. In terms of the elements of node and time axis, a driving behavior characteristic graph is established based on micro driving behavior indicator. Finally, the probability distribution is used for further verification and analysis. The results show that the analysis results of driving behavior characteristic graphs are consistent with the classification of "SAF-ECO". The graph directly shows the changing process of individual drivers' driving behavior. A reasonable coupling characteristic description of SAF-ECO's driving behavior is conducive to the improvement of drivers' self-management ability and the customization of drivers.

Driving Behavior; Graph; Security Classification; Behavior Characteristic