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Modeling Speed and Comfort Threshold on Horizontal Curves of Rural Two-Lane Highways Using Naturalistic Driving Data
| 题名： | Modeling Speed and Comfort Threshold on Horizontal Curves of Rural Two-Lane Highways Using Naturalistic Driving Data |
| 正文语种： | 英文 |
| 作者： | Bashar Dhahir1; Yasser Hassan, Ph.D., P.Eng.2 |
| 作者单位： | 1Postdoctoral Research Fellow, Dept. of Civil and Environmental Engineering, Carleton Univ., 1125 Colonel By Dr., Ottawa, ON, Canada K1S5B6. 2Professor and Chair, Dept. of Civil and Environmental Engineering, Carleton Univ., 1125 Colonel By Dr., Ottawa, ON, Canada K1S5B6 (corresponding author). |
| 关键词： | Highway design; Geometry; Alignment; Driver behavior; Curve speed; Driver comfort; Naturalistic driving |
| 摘要： | Modeling efforts for driver behavior parameters on horizontal curves have mostly focused only on the 85th percentile value. However, predicting whole distributions would help improve alignment design by allowing reliability-based design and design consistency evaluation. This paper used naturalistic driving study data to model distributions of speed and comfort threshold on horizontal curves of two-lane rural highways. Several variables along the approach tangent and curve were extracted and examined. This analysis helped determine the driver behavior parameters needed to evaluate driver behavior on horizontal curves and the headway threshold for free-flow conditions. Driver level models (DLM) and panel models (PM) were developed to predict distributions of curve speed and comfort threshold in addition to the traditional 85th percentile models. The models developed can be used in evaluating vehicle stability, driver comfort, and design consistency. Thus, the models can act as the basis for reliability analysis of horizontal curves, for which analysis methods are already established but realistic data are relatively scarce. |
| 出版年： | 2019 |
| 期刊名称： | Journal of Transportation Engineering |
| 卷： | 145 |
| 期： | 6 |
| 页码： | 1-12 |
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