無專用左轉(zhuǎn)相位十字形交叉口左轉(zhuǎn)導向線計算模型
發(fā)布時間：2018-11-21 14:43
【摘要】：為了規(guī)范無專用左轉(zhuǎn)相位下左轉(zhuǎn)車輛的行駛秩序,建立了針對十字形交叉口的左轉(zhuǎn)導向線計算模型。該模型包括內(nèi)側(cè)和外側(cè)左轉(zhuǎn)導向線計算模型兩個部分。通過視頻圖像處理技術提取左轉(zhuǎn)車輛全時空信息,發(fā)現(xiàn)使用移位指數(shù)函數(shù)擬合車輛左轉(zhuǎn)軌跡結果最優(yōu),并將其作為左轉(zhuǎn)導向線計算模型的基本形式。結合交叉口的幾何條件,分析了避免左轉(zhuǎn)車輛與對向直行、對向左轉(zhuǎn)車輛沖突的臨界條件,確定沖突點位置。在此基礎之上,根據(jù)左轉(zhuǎn)起始點、結束點和沖突點三點坐標對模型參數(shù)進行標定。最后,給出了模型的計算案例。研究成果能夠為十字形交叉口左轉(zhuǎn)導向線合理有效的渠化設計提供參考。
[Abstract]:In order to standardize the driving order of left-turn vehicles without special left-turn phase, a model of left-turn guide line for cross intersection is established. This model includes two parts: inner and outer left turn guide line calculation model. The video image processing technique is used to extract the whole space-time information of the left-turn vehicle. It is found that the shift index function is used to fit the result of the left-turn trajectory of the vehicle, and it is regarded as the basic form of the left-turn guide line calculation model. Combined with the geometric conditions of intersection, the critical conditions for avoiding the conflict between the left-turn vehicle and the opposite turning vehicle are analyzed, and the position of the conflict point is determined. On this basis, the model parameters are calibrated according to the three-point coordinates of the starting point, the end point and the conflict point of the left turn. Finally, a case study of the model is given. The research results can provide a reference for the rational and effective channelization design of the left-turn guide line of cross-shaped intersection.
【作者單位】： 吉林大學交通學院;吉林市公安局交警支隊;
【基金】：國家自然科學基金項目(51278220;51278520) 吉林省科技發(fā)展計劃重點項目(20130206093SF)
【分類號】：U491.23
，
本文編號：2347277
[Abstract]:In order to standardize the driving order of left-turn vehicles without special left-turn phase, a model of left-turn guide line for cross intersection is established. This model includes two parts: inner and outer left turn guide line calculation model. The video image processing technique is used to extract the whole space-time information of the left-turn vehicle. It is found that the shift index function is used to fit the result of the left-turn trajectory of the vehicle, and it is regarded as the basic form of the left-turn guide line calculation model. Combined with the geometric conditions of intersection, the critical conditions for avoiding the conflict between the left-turn vehicle and the opposite turning vehicle are analyzed, and the position of the conflict point is determined. On this basis, the model parameters are calibrated according to the three-point coordinates of the starting point, the end point and the conflict point of the left turn. Finally, a case study of the model is given. The research results can provide a reference for the rational and effective channelization design of the left-turn guide line of cross-shaped intersection.
【作者單位】： 吉林大學交通學院;吉林市公安局交警支隊;
【基金】：國家自然科學基金項目(51278220;51278520) 吉林省科技發(fā)展計劃重點項目(20130206093SF)
【分類號】：U491.23
，
本文編號：2347277
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