| The highway mileage in our country has been growing steadily with the rapid development of economy and the comprehensive national strength enhanced continuously. Highway tunnel construction also have been accelerated in the complex terrain of mountainous area. There is a large potential safety hazard in the tunnel section which is the throat of the highway traffic. At present, the aura gradually adopted by people in tunnel as an effective measure which can induce driving traffic. But the establishment of aura color and interval is mostly based on experience in the process of tunnel aura setting and no one studies it deeply. This paper which was based on the project of Chongqing education commission science and technology about the research on mountainous area highway tunnels landscape coordination degree of traffic safety based on the driver's dynamic visual(No. KJ130419) analyzed the impact of tunnel aura color and interval on drivers' dynamic visual and psychological state and studied the selection of tunnel aura color and the reasonable interval under different driving speed with the simulation experiment based on consulting a large number of literatures.Firstly, this paper analyzed the drivers' visual characteristics in their driving from the visual acuity, view and the adaption to light and dark, ect. and its influence on traffic safety. It further summarized the color rule and system and analyzed the influence of color on drivers' visual and psychological according to the related theory of color psychology, which provided guidance for the paper.Secondly, this paper selected some colors which is commonly used in the traffic such as red, yellow, white, orange, ect. and the scheme of tunnel aura color and interval setting has been designed. The schemes of tunnel aura setting have been simulated using the UC-win/Road simulation software and many drivers have been tested using Tobii eye tracking equipment. It analyzed the changing rule of aura color and interval on drivers' pupil area and its change rate under different driving speed based on the experiment data. The table of the impact of tunnel aura color and interval on drivers' psychological state under different driving speed has been received according to the relationship between drivers' psychological state and their pupil area change rate. The trend surface model among driving velocity, tunnel aura color (interval) and drivers' pupil area has been established in matlab. The recommended tunnel aura color and interval have been received finally according to the above research and the relationship between drivers' psychological state and driving safety, which provides powerful basis for tunnel aura color and interval setting.Finally, the single factor sensitivity analysis has been respectively carried out on driving velocity, tunnel aura color and interval setting in order to determine the influence degree of driving velocity, tunnel aura color and interval on drivers' visual indicators. It concluded that the most sensitive factor of the drivers visual characteristics is driving velocity according to compared the sensitivity of drivers' pupil area on the three factors, which verified the necessity of considering driving velocity when determine the tunnel aura color and interval in their setting. |
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