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为探索急弯处不同警告标志位置对驾驶行为的影响机理,利用驾驶模拟试验,在急弯前设置5种不同位置的警告标志,观察车辆在弯前直线路段、弯道路段中的运行状态。结果表明,标志位置对直线路段的平均速度,直线、弯道路段的平均加速度、速度标准差均存在显著性影响;标志位置与急弯半径的交互效应对直线路段的平均速度、弯道路段的平均加速度有显著性影响。警告标志位置能够影响车辆在弯前直线路段的行驶速度、驾驶员在弯道路段对速度的纵向控制以及过弯前后速度的波动性;同时,对速度控制的影响还受到急弯半径的干扰。
In order to explore the mechanism of the influence of different warning signs on the driving behavior at sharp bends, five types of warning signs were set up before the sharp bends to observe the running status of the vehicles in the straight and curved sections before driving. The results show that the location of the marker has a significant effect on the average speed of straight sections, the average acceleration of straight lines and curved sections, and the standard deviation of speed. The interaction between the location of mark and the radius of sharp bend has significant influence on the average speed of straight sections, Acceleration has a significant effect. The location of the warning signs can affect the vehicle’s driving speed in the straight line before cornering, the longitudinal control of the driver’s speed in the curve section, and the speed fluctuation before and after the cornering. At the same time, the influence on the speed control is also disturbed by the sharp radius.