城郊公路路網(wǎng)特征交通安全影響研究
[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.
【作者單位】: 同濟(jì)大學(xué)道路與交通工程教育部重點(diǎn)實(shí)驗(yàn)室;中佛羅里達(dá)大學(xué)土木環(huán)境和建筑工程系;
【基金】:國(guó)家自然科學(xué)基金優(yōu)秀青年基金項(xiàng)目(51522810) 上海市科學(xué)技術(shù)委員會(huì)社會(huì)發(fā)展領(lǐng)域項(xiàng)目(15DZ1204800)
【分類號(hào)】:U492.8
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