高速公路隧道反光条间距对跟驰行为的影响

Influence of Reflective Strip Spacing in Freeway Tunnel on Car Following Behavior

文中根据跟驰过程隧道反光条的刺激次数计算出相应的反光条间距,选取32名驾驶员作为被试,通过UC/Win-Road开展模拟驾驶实验,记录隧道反光条间距为0、280、140、100、70、50 m方案下的行车数据,采用第一次减速车距、跟车车距和车道偏移等指标验证方案的有效性.结果表明:相较于改善前,不同间距下隧道反光条都会增大第一次减速车距和跟车车距,减少车道偏移量,提升隧道行车安全性.但是当隧道反光条间距过大、刺激次数少时,改善效果较差,当隧道反光条间距过小、刺激次数多时,会引起负面影响,导致车距和偏移改善效果不显著,其中隧道反光条间距为140 m、刺激2次时最为合理,车距和偏移改善效果较好.

According to the stimulation times of tunnel reflective strips during car-following,the corresponding reflective strip spacing was calculated,and 32 drivers were selected as subjects.Through UC/Win-Road,the driving simulation experiment was carried out,and the driving data were recorded under the schemes of tunnel reflector spacing of 0,280,140,100,70 and 50 m.The effectiveness of the scheme was verified by the first deceleration distance,the following distance and the lane deviation.The results show that,compared with before improvement,the reflective strips at different intervals will increase the first deceleration distance and the following distance,reduce the lane offset and improve the tunnel driving safety.However,when the distance between the reflective strips in the tunnel is too large and the stimulation times are few,the improvement effect is poor.When the distance between the reflective strips in the tunnel is too small and the stimulation times are too many,it will have a negative impact,resulting in the improvement effect of the distance and deviation is not significant.Among them,the spacing of tunnel reflective strips is 140m,and it is the most reasonable to stimulate twice,and the improvement effect of vehicle distance and offset is better.