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为了寻求高速公路小半径路段标志与标线的较优组合,借助驾驶模拟仪器,对设置于小半径路段的3种典型标志与标线组合进行对比试验,从速度、横向偏移量、转弯位置、操作负荷以及注视行为5个角度考量,并结合小波分析理论,提出用转向盘转角系数的高频能量值作为高速公路自由流状态下驾驶操作负荷的评价标准。结果表明:现行规范中的急弯减速慢行标志形象有余而远视效果不足;纵向减速标线配合线形诱导标诱导效果更好,能够辅助驾驶人更平顺地通过小半径路段;横向减速标线会增加断面车速的离散程度;警告类型的标志与标线组合不当或设置位置不当,会影响驾驶人判断,产生驾驶人过早转弯等负面影响,因此在设计中应根据实际需要适当地选用标志与标线进行组合设置。
In order to seek the optimal combination of road markings and marking on small radius section of expressway, three types of typical signs and marking combinations on small radius road sections were tested by means of driving simulator. The speed, lateral offset, , Operation load and gaze behavior. Combining with the wavelet analysis theory, the high frequency energy value of the steering wheel corner factor is proposed as the evaluation criterion of the driving operation load under the free-flow condition of expressway. The results show that: the current norms of sharp bends slowed down slow-moving signs of imagery and hyperopia lack of effect; longitudinal deceleration marked line with the guidance of the linear guidance induced effect is better, can help drivers more smoothly through the small radius road sections; horizontal deceleration markings will increase The speed of the cross-section of the degree of dispersion; warning type of signs and marking improper combination or improper positioning will affect the driver to judge, resulting in premature turning and other negative effects of the driver, so the design should be based on actual needs of the appropriate selection of signs and superscript Line combination settings.