CAJ | 학술논문

在分析应急车辆对城市道路交通流影响的基础上,引入让行状态参数、警笛影响区域和强制换道安全距离等特征变量,修改换道规则,建立了多车道元胞自动机模型,并进行数值模拟.结果表明,车道数量和混合车辆比例系数在低密度范围内影响车辆速度及换道次数,警笛影响区域参数改变了一定范围内车辆的换道次数,应急车辆强制换道安全距离参数主要影响应急车辆的速度及换道次数.研究发现,应急车辆对低密度交通流的扰动现象明显,其与社会车辆相互作用参数的设置使得交通流元胞自动机模型更接近应急条件下实际交通运行.
재분석응급차량대성시도로교통류영향적기출상,인입양행상태삼수、경적영향구역화강제환도안전거리등특정변량,수개환도규칙,건립료다차도원포자동궤모형,병진행수치모의.결과표명,차도수량화혼합차량비례계수재저밀도범위내영향차량속도급환도차수,경적영향구역삼수개변료일정범위내차량적환도차수,응급차량강제환도안전거리삼수주요영향응급차량적속도급환도차수.연구발현,응급차량대저밀도교통류적우동현상명현,기여사회차량상호작용삼수적설치사득교통류원포자동궤모형경접근응급조건하실제교통운행.
@@@@Based on the analysis of urban road traffic flow affected by emergency vehicle, a muti-lane cellular automaton model is established. Three characteristic variables are introduced to modify the lane change rules, including the give-way state variable, the affected areas of police siren and the safe distance for mandatory lane change. Numerical simulation results indicate that lane number and hybrid vehicle scale factor have a great influence on vehicle speed and lane change number in low-density range. And the parameter setting for affected areas of police siren changes the lane change number within a certain range. Meanwhile, the parameter of safe distance for mandatory lane change mainly affects emergency vehicle speed and lane change number. The study indicates that the appearance of emergency vehicle interferences with traffic flow of lower density obviously, and the proposed parameters make cellular automaton model closer to the actual traffic scenarios under emergency conditions.