摘要
为探寻路面边缘率标线长度对驾驶员减速行为的影响现象和作用机理,在高速公路直线段开展路上实证研究。采集试验路段自由流车辆的断面车速数据,统计分析边缘率标线长度对减速行为的影响现象。最后,运用结构方程模型(SEM)探索影响机理。结果表明,长度的减小能够显著增强边缘率标线减速效果,当边缘率标线长度分别取1.5,1和0.5 m时,平均车速与铺设前相比分别降低5.0%,7.1%和8.8%;边缘率标线长度从标线扩张率和视觉暂留2个角度影响驾驶员的减速行为;边缘率标线长度的减小与时间频率的增大能够协同地增强驾驶员的减速行为。
Road experiments were carried out on freeway to study the influence of length of edge rate bars on driver＇s reduction behavior of length. Free flow speed data were collected. And data were analyzed by using SEM. The result shows that speed reduction was enhanced with loss in length. Average speed reduced by 5.0% , 7.1% and 8.8% when length was 1.5, 1 and 0.5 m respectively, that length influences reduction behavior through expansion rate and visual staying, and that reduction behavior was influenced synergistically by loss in length and increase in temporal frequency.
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2013年第10期114-120,共7页
China Safety Science Journal
基金
国家自然科学基金资助(50778142
51078299)
交通运输部联合科技联合攻关项目(2010353342240)
关键词
交通安全
边缘率标线长度
结构方程模型(SEM)
减速效果
视觉暂留
扩张率
时间频率
traffic safety
length of edge rate bars
structural equation model （SEM）
speed reduction behavior
visual staying phenomenon
expansion rate
temporal frequency
