基于驾驶模拟实验的85％位车速预测模型

应用运行车速（85％位车速）对道路设计一致性进行评价已被世界各国广泛采用，但用来进行评价的参数——运行车速的获得大都是在道路上测得的，提出一种通过在专用汽车驾驶模拟系统上进行实验，获取运行车速，从而建立运行车速预测模型的方法。实验采用真实路段的虚拟场景，并可在实验中实时记录速度数据，利用速度数据对平均车速、85％位车速与单圆曲线的曲率变化率CCRs及坡度进行回归分析，最后应用CCRs及坡度建立平均车速、85％位车速的预测模型。

Establishment of the 85th Percentile Speed Forecasting Model Based on Driving Simulation Experiment

Using operational speed (85th Percentile Speed) to evaluate the design of road consistency has been widely adopted around the world;most of the operational speed used to evaluate consistency was measured on the real road.A new method was introduced to establish the 85th percentile speed forecast model based on driving simulation system.Firstly a virtual experimental scenario was established according a sample real road;then the driving simulation experiment was taken and the datum of speed were obtained;the...