基于视觉负荷的公路隧道进出口环境改善范围

Visual Environment Improving Scope at Entrance and Exit of Highway Tunnel Based on Visual Load

摘要:

在大量动视点行车实验的基础上,提出了以“瞳孔面积最大瞬态速度值”(MTPA)为视觉负荷评价指标.利用该指标对高速公路隧道进出口驾驶员视觉障碍与驾驶视觉舒适性及视觉负荷程度进行了相关分析，得出隧道进出口在白天、夜间不同限速条件下视觉环境应加强改善的范围,并提出了利用植物、照明加强及路面色彩等改善隧道进出口“黑洞”或“白洞”效应的措施.

Abstract:

Based on a large number of eye movement driving experiments, the evaluation index of visual overload named “maximum transient velocity value of pupil area” (MTPA) was established. Correlation among drivers’ visual obstacles, driving visual comfort and visual load was analyzed by applying MTPA evaluation index at entrance and exit of freeway tunnel, therefore visual environment scopes to be improved are obtained under different speed limited during the daytime and the night respectively. And some improvement measures on tunnel white hole effect and black hole effect at entrance and exit of highway tunnel are recommended by means of plant planning, illumination enhancement,road surface coloring, etc.