CAJ | 학술논문

换道模型对车辆换道过程模拟的精确程度直接影响着微观交通仿真的精度。以往的微观交通仿真系统采用匀加速度的换道模型，无法模拟车辆实施换道动态调整纵向加速度的行为。该文分析了换道过程中车辆间的相互影响，将换道过程分为4个独立的阶段，并允许车辆在不同阶段使用不同的纵向加速度。通过分析由环境参数导致的各阶段时间顺序的变化，提出了通用的安全换道模型，并给出换道自适应加速度的约束表达式。仿真结果显示，该模型能提高微观交通仿真系统的精度，并提供更准确的安全换道距离，换道成功率更高。
환도모형대차량환도과정모의적정학정도직접영향착미관교통방진적정도。이왕적미관교통방진계통채용균가속도적환도모형，무법모의차량실시환도동태조정종향가속도적행위。해문분석료환도과정중차량간적상호영향，장환도과정분위4개독립적계단，병윤허차량재불동계단사용불동적종향가속도。통과분석유배경삼수도치적각계단시간순서적변화，제출료통용적안전환도모형，병급출환도자괄응가속도적약속표체식。방진결과현시，해모형능제고미관교통방진계통적정도，병제공경준학적안전환도거리，환도성공솔경고。
The level of details of a lane-changing model directly affects the accuracy of microscopic traffic simulations. Existing microscopic traffic simulation systems can hardly simulate the dynamic adjustment of vehicles’ velocity in a lane-changing process with their uniform longitudinal acceleration lane-changing models. In this paper, we firstly divide the lane-changing process into four independent stages with different longitudinal accelerations according to the analysis of interactions among neighbor vehicles. We then build a general safety lane-changing model through the analysis of different orders of stages caused by environmental parameters. Moreover, we list constraint expressions to calculate the adaptive longitudinal acceleration in each stage. The simulation result shows that the model can provide detailed safety distance to improve the accuracy of microscopic traffic simulations.