驾驶员心率变化与改扩建道路弯坡比和行车速度差关系

驾驶员的心理紧张程度会直接影响到行车安全,为了研究改扩建道路线形和行车速度差对驾驶员心率变化的影响,采用定量分析的方法,建立相关性模型.结果表明,在改扩建道路中,驾驶员心率增长率与行车速度差成正相关性,当行车速度差达到28 km·h~(-1)时,驾驶员处于紧张状态;驾驶员心率增长率与道路弯坡比成负相关性,弯坡比小于50 m·%~(-1)时,驾驶员处于紧张状态.在施工路段中增加限速标志和减速设施,适当增大路段的曲线半径,可有效提高行车安全.

Relationship between driver's heart rate change and curved slope ratio of rebuilt and expanded roads and driving speed difference

the degree of psychological stress of drivers will directly affect the safety of driving. In order to study the influence of road alignment and speed difference on the heart rate of drivers, a quantitative analysis method is adopted to establish a correlation model. The results show that the increase rate of heart rate is positively correlated with the difference of driving speed in the course of reconstruction and extension. When the difference of driving speed reaches 28km/h, the driver is in a tense state. There was a negative correlation between the increase of heart rate and the ratio of road curve to slope. When the ratio of curve to slope was less than 50 m /%, the driver was in a tense state.