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为了研究冰雪环境弯道线形诱导标志对交通流的影响,揭示冰雪环境交通标志诱发驾驶员弯道驾驶行为变化的过程,先分析了冰雪环境弯道交通特性,探究了驾驶员冰雪环境视觉信息传递原理及标志色彩的刺激作用。并根据弯道车辆的行驶特性,分析了冰雪环境下行车速度的主要影响因素,设置了弯道线形诱导标志,再分别开展了冰雪环境下的冰雪路面与良好路面的弯道标志改善试验,以分析弯道线形诱导标志对冰雪环境弯道的交通流影响,采用NC200便携式交通分析仪进行数据观测。结果表明,在冰雪环境弯道冰雪路面与良好路面中设置车辆转向指示标志,能显著提高交通流的稳定性、降低交通流的速度,从而有效提高冰雪环境弯道交通的安全性。
In order to study the influence of curve guidance sign on the traffic flow in ice and snow environment and to reveal the driving behavior change induced by traffic signs in ice and snow environment, the paper first analyzes the traffic characteristics of the curve in the snow environment and explores the visual information transmission of ice and snow environment Principles and signs of color stimulation. According to the driving characteristics of curve vehicle, the main influencing factors of driving speed in ice and snow environment are analyzed. Curve-shaped guidance marks are set up, and the improvement test of curve mark of ice-snow pavement and good pavement are respectively carried out. The influence of curved line induced signs on the traffic flow in the ice and snowy environment corners was analyzed. The data were observed by NC200 portable traffic analyzer. The results show that setting the steering signs on the curved ice road and the good road can significantly improve the stability of traffic flow and reduce the speed of traffic flow so as to effectively improve the safety of traffic in the corner of ice and snow environment.