中文摘要：

从冲突避让的角度对城市交叉口内机动车驾驶员的穿越行为进行了分析,应用场图工具研究了驾驶员在进行车流穿越时的决策过程,提出了有异于可接受间隙模型的、基于占先度的驾驶员冲突避碰决策模型。利用实地采集的数据对驾驶员的临界占先度阈值的分布参数进行了标定,并通过科尔莫戈罗夫验证法进行统计学假设检验。分析结果表明：437组实地冲突样本中,有82.2%的驾驶员决策行为为正常决策,17.8%的决策行为为异常决策,说明驾驶员在决策过程中存在一个临界的心理占先度,并且驾驶员的临界占先度阈值服从正态分布N（0,0.22）。

英文摘要：

Vehicles＇ crossing behaviors were analyzed from the perspective of conflict avoidance,their decision rules during crossing process were described by using field graph tool, and a driver＇s conflict avoidance decision model based on preemptive level was introduced, which was different with the conventional gap acceptance model. The distribution parameter of drivers＇critical preemptive level threshold was calibrated by field conflict data, and statistical hypothesis was tested through Kolmogorov test method. Analysis result shows that among 437 groups of field conflict samples, 82. 2% drivers＇ decisions are normal decisions, while 17. 8% drivers＇ decisions are abnormal decisions, which indicates that there should be a physiological critical preemptive level, and the drivers＇ critical preemptive level threshold follows normal distribution N（0, 0.2^2）.