摘要
通过试验研究了车辆行驶过程中驾驶员的心率变异性与设计速度一致性、运行速度协调性、速度降低系数及速度梯度之间的关系，结论认为，衡量路线安全性的指标应选用运行速度协调性和速度梯度两个指标。速度协调性｜△V85｜评价标准为：｜△V85｜≤10km／h，运行速度协调性良好；｜△V85｜为10～20km／h，运行速度协调性一般，宜适当调整相邻路段路线指标，使运行速度的差值不大于10km／h；｜△085｜≥20km／h，运行速度协调性不良，相邻路段设计参数需要调整。速度梯度G评价标准为：Gv〈0．10，路线安全性良好；0．10≤Gv〈0．15，路线安全性一般；Gv≥0．15，路线安全性差，相邻路段需要调整。研究结论为公路路线安全性评价工作提供了理论支持。
The experiments were drawn to study the relations among the driver＇s heart rate variability and work.load degree and operating speed, and the indicators as consistency of design speed, operating speed coordination, speed and acceleration of lower coefficient and velocity gradient were studied to find the relation between safety and above indicators. The conclusion obtained that the road safety indicators should choose as operating speed coordination and velocity gradient. Speed coordination evaluation criteria： ｜△085｜0 km/h, good coordination; 10 km/h ｜△085｜420 km/h： common coordination, when con- ditions permitted adjacent sections of technical indicators should be adjusted, so that the speed differentia- tion is not more than 10 km/h｜△085｜≥20 km/h： poor coordination speed, need to re＇-adjust the design of the adjacent sections. Velocity gradient evaluation criteria. G≤0.10, good route safety 0.15, common route safety; Gv〉0.15, poor road safety, the adjacent sections need to re-adjust. The con- clusions supply a theoretic basic to the safety audit of highway.
出处
《公路》
北大核心
2013年第9期25-30,共6页
Highway
基金
西部交通建设科技项目
项目编号20113182231470
校科研启动项目
项目编号GY-Z11043
关键词
安全性评价
心率变异性
运行速度协调性
速度梯度
safety audit
heart rate variability
operating speed coordination
velocity gradient
