文章摘要
宋婉璐,王奎元,谭婷,盛玉刚,韩宝睿.干路绿化带特性对驾驶人视觉影响评价研究[J].交通运输研究,2019,5(1):57-64.
干路绿化带特性对驾驶人视觉影响评价研究
Assessment on Visual Impact of Urban Arterial Green Belt on Drivers
  
DOI:
中文关键词: 交通安全  城市干路绿化带  视觉影响评价  美景度评价  注视点
英文关键词: traffic safety  green belts of urban arterial  visual impact assessment  SBE(Scenic Beauty Estimation)  fixation point
基金项目:
作者单位
宋婉璐 南京林业大学汽车与交通工程学院 
王奎元 南京林业大学汽车与交通工程学院 
谭婷 南京林业大学汽车与交通工程学院 
盛玉刚 南京林业大学汽车与交通工程学院 
韩宝睿 南京林业大学汽车与交通工程学院 
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中文摘要:
      为量化研究城市干路绿化带对驾驶人的视觉影响程度,首先利用对偶比较法选取干路绿化带样本,并基于德尔菲法筛选绿化带的高度、冠幅等五种影响驾驶行为的指标,采用SBE法对样本路段进行相应指标的视觉刺激评价并建立了单一车速下视觉影响度模型。为验证模型的可靠性,使用眼动仪进行实车上路试验,根据五种指标将视觉场景划分兴趣区,分析兴趣区内驾驶人注视点的集中度,并与模型得分进行拟合,发现拟合度较高,说明模型可靠。然后,采用驾驶模拟舱获得不同车速下的眼动数据,构造了可变车速下视觉影响度优化评价模型。最后,基于优化模型计算视觉环境舒适的绿化带影响度分值,确定了视觉舒适评分区间。研究结果表明,干路绿化带对驾驶人视觉存在一定影响,应当合理调整绿化带各项指标,以保证其分值位于舒适区间,从而减小绿化带对驾驶人视觉的不良影响。
英文摘要:
      In order to quantify the visual impact of arterial green belts on drivers, firstly several samples of arterial belts were selected by LCJ(Law of Comparative Judgement) method. Delphi method was used to filter five indicators which impact driving behavior, including tree height, crown width, and so on. The visual impact model (under same speed) was built based on the simulation evaluation of the sample arterials by using SBE(Scenic Beauty Estimation) method. In order to verify the reliability of the model, eye trackers were adopted in field experiments. According to the influencing factors of green belt, visual scenes were divided into different AOI(Area of Interest). The concentration of driver's eye fixation point in each AOI was obtained and fitted with the score of the model. It was found that the fitness was high, which proved the model was reliable. Then, the corresponding eye movement data under different speeds was obtained by using driving simulator in VR(Virtual Reality) experiments, so as to build an optimized model for variable vehicle speeds. Finally, the comfortable visual interval was determined based on the optimized model. The results show that the green belt of arterial has certain visual impact on drivers, and the factors of green belt should be modified to ensure that the impact score is in the comfort interval, so as to reduce the bad visual impact on drivers.
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