CAJ | 학술논문

文中在NaSch模型的基础上提出一个改进的元胞自动机模型来模拟周期性边界条件下高速公路上车流运动。考虑到不同速度应有不同的安全车间距、反应时间和减速距离,根据车辆与前方紧邻车辆之间的间距和车辆的速度来确定该车的运动,这样就可以间接地反映出前方紧邻车辆对当前车辆的影响。通过引入不同的安全间距可以描述不同速度运动的车辆接近前方车辆时的减速行为。由于不同的安全车间距的引入,并且考虑到速度的差异,因而可以较好地描述交通流中的不同现象,可以对车辆微观运动进行合理地描述。
문중재NaSch모형적기출상제출일개개진적원포자동궤모형래모의주기성변계조건하고속공로상차류운동。고필도불동속도응유불동적안전차간거、반응시간화감속거리,근거차량여전방긴린차량지간적간거화차량적속도래학정해차적운동,저양취가이간접지반영출전방긴린차량대당전차량적영향。통과인입불동적안전간거가이묘술불동속도운동적차량접근전방차량시적감속행위。유우불동적안전차간거적인입,병차고필도속도적차이,인이가이교호지묘술교통류중적불동현상,가이대차량미관운동진행합리지묘술。
An improved CA model was proposed to describe the highway traffic under the periodic boundary conditions on the basis of NaSch model.Considering the different speed with the different safety distance,reaction time and deceleration distance,this model claims that the motion of a vehicle at one time step depends on both its headway and the speed of the vehicle,thus including indirectly the influence of its neighboring vehicle.In addition,the different safety distance was introduced to descript the deceleration behavior of vehicles with different speeds.Since the different safety distance was introduced into this model and differences of speeds were taken into account,this model gives a better description of the phenomena observed in the traffic flow and gives a reasonable depiction of the motion of a single vehicle.