道路线形设计指标选用及安全评价研究

Research on the Indicators Selection and Safety Evaluation of Road Linear Design

构建基于车辆运行速度的速度一致性评价模型,依托广东省内某山区二级公路进行道路线形安全评价。结果表明,道路路段4由于半径设计过小而存在安全隐患,需设置必要限速标志;路段5需尽可能避免长直线设计,适当增大临接曲线超高。论文所做研究验证了模型可靠性及适用性。

This paper constructs the speed consistency evaluation model based on the vehicle running speed,and carries out the road alignment safety evaluation relying on a mountain second-class highway in Guangdong Province.The results show that road section 4 has potential safety hazards due to the too small radius design,so it is necessary to set the necessary speed limit signs;Section 5 should be designed to avoid long straight lines as much as possible,and the superelevation of adjacent curves should be appropriately increased.The research conducted in this article validates the reliability and applicability of the model.