Abstract: For the phenomenon of poor sight distance at two-lane mountainous highway intersection, the driver’s more head or body rotation time in the process of driving at two-lane mountainous highway intersection than that at plain district was researched by analyzing the characteristics of the driver’s recognition at intersection. The Smart eye 5.7 eye tracker was used to the road test of driver’s recognition at two-lane mountainous highway intersection. And according to the driver’s gaze time (including blinking, saccade and fixation time) and the geometry data of mountainous highway intersection (including the intersection angle and branch slope), the stopping sight distance calculation models at uncontrolled intersections and let-stop intersections were established based on driver’s visibility. Then, the recommended value of stopping sight distance at the two-lane mountainous highway intersection was calculated out according to the proposed model, which could provide a theoretical basis for the design of mountainous highway intersection.

Key words: traffic and transportation engineering, two-lane mountainous highway, stopping sight distance, driver’s visual characteristics, intersection

摘要： 针对山区双车道公路交叉口视距不良现象，通过分析驾驶员在交叉口的识认性特性，研究了山区双车道公路交叉口行车过程较平原区公路交叉口驾驶员增加转动头部或身体的时间过程。采用Smart eye 5.7眼动仪对驾驶员通过山区双车道公路交叉口的识认性进行实车试验，并根据驾驶员的注视时间（包括眨眼、扫视和注视时间）和山区公路交叉口几何数据（包括交叉角度和支路坡度），分别建立了基于驾驶员视认性的无控交叉口和停让交叉口停车视距计算模型，并根据所建模型计算了山区双车道公路交叉口停车视距及其建议值，为山区公路交叉口的设计提供理论依据。

关键词: 交通运输工程, 山区双车道公路, 停车视距, 驾驶员视觉特性, 交叉口