Study on Information Perception of Visual Illusion Speed Control Marking in Approach Section of Expressway Tunnel
Due to the black hole effect at the entrance of expressway tunnel and the difference in the speed limit between the inside and outside of tunnel,the entrance of the expressway tunnel has become a road section with high accident rate.In order to improve the safety and comfort of driving at the entrance of expressway tunnel,the visual illusion speed control marking is often set up in the approach section of tunnel to give drivers visual impact,which plays a role in reminding drivers to slow down safely.UC-win/Road is used to establish a simulation model,and the simulation test is carried out through the indoor simulation driving platform.A driver's visual information perception is measured by eye tracker,and the physical indicator speed reduction rate,maximum deceleration value and physiological indicator pupil diameter change rate are selected as evaluation indicators.The weighted RSR comprehensive evaluation method is used to evaluate the deceleration effect of speed-increasing visual illusion speed control marking(transverse-shaped and fishbone-shaped)and lane-compression visual illusion speed control marking(comb and inclined comb)with different flash rates on left and right lanes.The result shows that the 4 visual illusion speed control markings can affect drivers'ability to perceive information,and the influence degree is:fishbone-shaped＞transverse-shaped＞positive comb teeth-shaped＞oblique comb teeth-shaped.The deceleration effect of visual illusion speed control markings with the same type and different flash rates is different.With the same flash rate,the deceleration effect of the speed increased visual illusion speed control marking is better than that of the lane-compression visual illusion speed control marking.In order to meet the requirements of driving comfort,transverse-shaped visual illusion speed control marking with flash rate of 8 Hz is recommended for fast lane,and fishbone-shaped visual illusion speed control marking with flash rate of 8 Hz is recommended for slow lane.
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