山区低等级公路运行速度修正研究

摘要

介绍JTG B05—2015《公路项目安全性评价规范》中有关2级及以下低等级公路的运行速度预测方法,并以贵州省山区2级公路为例,分析山区2级公路在依据JTG B05—2015进行运行速度预测时存在的主要问题.以驾驶员实际反应时间为理论依据,分析JTG B05—2015预测结论与实际驾驶情况之间的偏差,并基于JTG B05—2015中运行速度预测方法,提出基于驾驶员反应时间的运行速度预测修正方法,并采用驾驶模拟试验进行仿真验证.%A forecast method for vehicle operation speed on secondary road and below is introduced in JTG B05-2015 "Highway Project Safety Evaluation Code". Based on the example of secondary road in mountainous area of Guizhou Province, an analysis is conducted on the forecast method to point out the major problem. There is deviation between the result predicted according to JTG B05-2015 and the actual operation speed. A correction method for vehicle operation speed prediction, in combination with the forecast method in JTG B05-2015, is suggested according to drivers' actual response time that is used as a theoretical foundation. Simulation tests are conducted to verify the feasibility of the method.