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In the same road conditions , traffic environment under similar conditions , for the same vehicle type and performance , some driver's actual driving faster than the road design speed is high, and some drivers than the actual driving speed of the section design speed is low. Cause of this phenomenon is the deep-seated reasons behind : Different driver desired speed established individual minds are different. Therefore , this article summarizes the relevant literature , based on the use of system analysis method on the driver desired speed were studied. First analyzes the driver's desired speed formation process, influencing factors and their relationship with the road traffic safety ; conducted a single-factor experimental design, modeled after a three-dimensional scene were simulated using the driving simulator experiment and try to do the experiment , the experimental design were optimized. In this paper, experimental data, using SPSS software analyzes and summarizes the number of lanes , lane width , shoulder width of three factors on the desired speed of the law , and were fitted by the number of lanes , lane width , shoulder width of three factors and the desired speed the function . This paper also analyzes the vehicle lateral deviation of the experimental group , summed up the number of lanes , lane width , shoulder width of the vehicle lateral deviation of three factors were studied. Questionnaire and pilot experiments were carried out to analyze the number of lanes in the driver's subjective psychological , lane width and road shoulders degree of influence on the desired speed . Finally, based on the desired speed simulation results , the establishment of a comprehensive model of driver's desired speed , the model number of lanes , lane width , shoulder width , driver condition , vehicle condition five correction factor for the value and description.
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