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《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:

2021年02期

Page:

267-277

Research Field:

交通信息工程及控制

Publishing date:

Info

Title:

Research on effectiveness of visual guiding system in entrance zone of freeway tunnel

Author(s):

WANG Shou-shuo¹;  DU Zhi-gang¹;  FENG Shou-zhong²;  JIAO Fang-tong¹;  XU Fu-qiang¹

(1. School of Transportation, Wuhan University of Technology, Wuhan 430063, Hubei, China; 2. Wuhan Guangyi Transportation Science and Technology Incorporated Company, Wuhan 430000, Hubei, China)

Keywords:

traffic engineering;  visual guiding system;  entrance zone of freeway tunnel;  sight distance and sight zone;  eye movement;  visually sensitive zone

PACS:

U491.52

DOI:

10.19818/j.cnki.1671-1637.2021.02.023

Abstract:

To achieve the purpose of early recognition, early adaptation, and early decision-making for drivers in entrance zones of freeway tunnels, the present traffic situation of tunnel entrance zones was analyzed, and an idea and method for improving the visual guiding system in entrance zones of freeway tunnels were proposed. Using an indoor driving simulation platform, the driver's eye data were collected with an eye tracker. The driver's area of interest was divided into five regions, and the changes in the eye movement parameters in each region were analyzed. The change rules of drivers' sight zones were described based on the gaze point distribution and the area of visually sensitive zone. The effect after the improvement were evaluated. Research result shows that after the improvement of visual guiding system for the entrance zone of the tunnel, drivers' browsing time ratio(45.97%)and gaze time ratio(39.02%)at a far distance from the road improve significantly compared to the current plan, and the saccade amplitude(5.47°)reduces significantly. After the improvement,gaze points are more concentrated at a far distance of the road, while gaze points on both sides of the road reduce. In the current plan, the area of visually sensitive zone decreases sharply approximately 180 m away from the tunnel portal and increases slowly in the tunnel. After the improvement, the area of visually sensitive zone decreases approximately 350 m away from the tunnel portal and remains relatively stable thereafter. After the improvement, the change speed of drivers' area of the visually sensitive zone in each tunnel zone is less than that before the improvement. The effectiveness of visual guiding system is verified. It allows drivers to pay more attention to traffic information at a far distance of the road and in the tunnel. At the same time, the transition amplitude of sight zone is smaller, and the visual load reduces. 10 tabs, 12 figs, 32 refs.

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Last Update: 2021-06-01