阐述了道路交通安全评价的详细流程，并针对长大纵坡、桥隧处等事故多发路段，给出了安全保障措施。
Explaining the details of road safety evaluation process, for the longitudinal gradient, tunnel and other accident-prone sections, the paper gives the security measures.
进而提出了适用于长大纵坡处的骨架密实型沥青混合料，并建立了一套骨架密实型沥青混合料的设计方法。
Then a design method of Skeleton Dense Asphalt Concrete which can be applied to longitudinal slopes was elicited.
随着我国公路建设的飞速发展，长大纵坡条件下的桥面铺装结构组合的重要性越来越受到人们的重视，同时桥面铺装结构组合的稳定性问题一直是道路建设中的一项技术难题。
With the rapid development of highway construction in our country, more and more attention was paid to the bridge deck textural association style under the conditions of large longitudinal slope.
山区高速公路建设中，路线最大纵坡与工程量、工程造价的矛盾十分突出，若严格执行标准会出现大量高填、深挖路基、长大桥梁及隧道。
In the construction of expressway in mountain area, the contradiction of the maximum longitudinal slope with engineering's volume and cost is very prominent.
根据下坡路段事故统计资料，分析纵坡坡度、坡长、竖曲线和下坡衔接平曲线与道路安全的关系，为提高长大下坡路段安全，优化纵面设计提供参考。
So the relationship between longitudinal gradient, grade length limit, vertical curve and safety is analyzed, which can be referred to improve the safety and optimize the profile design.
根据下坡路段事故统计资料，分析纵坡坡度、坡长、竖曲线和下坡衔接平曲线与道路安全的关系，为提高长大下坡路段安全，优化纵面设计提供参考。
So the relationship between longitudinal gradient, grade length limit, vertical curve and safety is analyzed, which can be referred to improve the safety and optimize the profile design.
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