城郊公路路网特征交通安全影响研究
发布时间：2018-11-28 16:53
【摘要】：为了揭示路网层面各因素对城郊公路安全的影响,采用宏观安全分析方法,基于交通分析小区(TAZ)层面构建了泊松对数正态条件自回归(PLN-CAR)模型。为考虑相邻TAZ间的空间相关性,分别采用0-1矩阵、共同边界矩阵以及相邻TAZ间衔接城郊公路总车道数3类空间权重矩阵构建了PLN-CAR模型。模型中同时考虑了公路层面变量(信控交叉口密度、接入口密度等)以及TAZ层面宏观变量(路网形态、土地利用类型等)。研究结果表明:采用共同边界矩阵的模型表现最优;相较于微观安全研究而言,采用宏观安全分析方法可以更加完整地考虑接入口密度以及信控交叉口密度对城郊公路路段与交叉口整体安全的影响;城郊公路长度、沿线接入口与信控交叉口密度均对城郊公路事故总数有显著正相关影响;在其他变量保持不变的情况下,树枝型路网TAZ内城郊公路事故数较网格型路网多88.3%,表明通过加强城郊公路沿线接入口管理,规范公路沿线信控交叉口设置,并于公路两侧规划建设平行的次干路可以有效改善其安全状况;相对工业仓储用地而言,商业办公用地和居住生活用地内的城郊公路更加容易发生事故。
[Abstract]:In order to reveal the influence of road network factors on highway safety in suburban areas, a Poisson logarithmic normal conditional autoregressive (PLN-CAR) model was constructed based on the (TAZ) level of traffic analysis community. In order to consider the spatial correlation between adjacent TAZ, the PLN-CAR model was constructed by using 0-1 matrix, common boundary matrix and three kinds of spatial weight matrices of the total number of lanes connecting the suburban highway between adjacent TAZ. In the model, both highway level variables (signal-controlled intersection density, entrance density, etc.) and TAZ level macro variables (road network shape, land use type, etc.) are considered. The results show that the model with common boundary matrix is optimal. Compared with the research of micro security, the influence of the density of entrance and the density of signal-controlled intersection on the overall safety of suburban highway section and intersection can be considered more completely by using the method of macro-safety analysis. The length of the suburban highway, the density of the entrance along the road and the density of the signal-controlled intersection have significant positive correlation with the total number of accidents in the suburbs. Under the condition that the other variables remain unchanged, the number of accidents in the suburban highway in TAZ is 88.38.3than that in the grid network, which indicates that by strengthening the management of the entrance along the suburban highway, the signal-controlled intersections along the highway can be standardized. And the construction of parallel secondary roads on both sides of the highway can effectively improve the safety situation; Compared with industrial storage land, suburban roads in commercial office land and residential land are more prone to accidents.
【作者单位】： 同济大学道路与交通工程教育部重点实验室;中佛罗里达大学土木环境和建筑工程系;
【基金】：国家自然科学基金优秀青年基金项目(51522810) 上海市科学技术委员会社会发展领域项目(15DZ1204800)
【分类号】：U492.8
本文编号：2363589
[Abstract]:In order to reveal the influence of road network factors on highway safety in suburban areas, a Poisson logarithmic normal conditional autoregressive (PLN-CAR) model was constructed based on the (TAZ) level of traffic analysis community. In order to consider the spatial correlation between adjacent TAZ, the PLN-CAR model was constructed by using 0-1 matrix, common boundary matrix and three kinds of spatial weight matrices of the total number of lanes connecting the suburban highway between adjacent TAZ. In the model, both highway level variables (signal-controlled intersection density, entrance density, etc.) and TAZ level macro variables (road network shape, land use type, etc.) are considered. The results show that the model with common boundary matrix is optimal. Compared with the research of micro security, the influence of the density of entrance and the density of signal-controlled intersection on the overall safety of suburban highway section and intersection can be considered more completely by using the method of macro-safety analysis. The length of the suburban highway, the density of the entrance along the road and the density of the signal-controlled intersection have significant positive correlation with the total number of accidents in the suburbs. Under the condition that the other variables remain unchanged, the number of accidents in the suburban highway in TAZ is 88.38.3than that in the grid network, which indicates that by strengthening the management of the entrance along the suburban highway, the signal-controlled intersections along the highway can be standardized. And the construction of parallel secondary roads on both sides of the highway can effectively improve the safety situation; Compared with industrial storage land, suburban roads in commercial office land and residential land are more prone to accidents.
【作者单位】： 同济大学道路与交通工程教育部重点实验室;中佛罗里达大学土木环境和建筑工程系;
【基金】：国家自然科学基金优秀青年基金项目(51522810) 上海市科学技术委员会社会发展领域项目(15DZ1204800)
【分类号】：U492.8
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