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影响驾驶疲劳的因素很多。作为驾驶疲劳主要影响因素之一的道路交通环境,是以动态形式展示在驾驶员视野中并产生作用的,有必要针对道路交通环境的动态特性进行专门研究。首先理论分析动态道路交通环境相互制约和影响的持续变化性和自主可控性。据此设计了基于3个场景的2组现场实车试验。然后以驾驶员的心率作为测量指标,研究动态道路交通环境对驾驶疲劳的影响。通过对比分析驾驶员的心率随道路交通环境场景的变化程度和行车速度大小的变化规律,发现道路交通环境变化性的大小会对驾驶疲劳的形成和发展产生影响。因此,合理设计道路交通环境的变化性能够减缓驾驶疲劳,提高道路的安全水平。
There are many factors that affect driving fatigue. As one of the main driving factors of driving fatigue, the road traffic environment is displayed in a dynamic manner in the driver’s field of vision and has an effect. It is necessary to conduct a special study on the dynamic characteristics of the road traffic environment. First of all, theoretical analysis of the dynamic road traffic environment constraints and the impact of continuous change and autonomy of controllability. Based on this, two sets of on-site real vehicle tests based on three scenes were designed. Then the driver’s heart rate as a measure to study the impact of dynamic road traffic environment on driving fatigue. By comparing and analyzing the change of the driver’s heart rate with the change of the road traffic environment scene and the change of the driving speed, it is found that the change of the road traffic environment will have an impact on the formation and development of driving fatigue. Therefore, to reasonably design the variability of road traffic environment can reduce driving fatigue and improve the safety of roads.