【摘要】 实际交通中,换道车辆的行驶速度不同,其所需要的安全换道间距也不尽相同。具体表是,高速行驶的车辆换道迅速、敏捷,而低速行驶车辆换道踌躇、犹豫。因而,对所有换道车均设定一个固定的安全换道间距是不恰当的,前人很少在这方面进行研究;结合现实提出的弹的安全换道间距规则,在改进前人模型仿真质量的同时,也提高了车辆的换道频率。模拟结果显示较以前模型,提出的元胞自动机模型将可改善道路的通行能力、提高道路资源的利用效率。更多还原

【Abstract】 In real traffic,the lane-changing vehicles usually have different speeds and so their safe spaces for lane-changing are not same.That is to say,the high-speed vehicles change lanes swiftly and the low-speed ones vacillatingly.Therefore,the fixed safe space for lane-changing in some cellular automaton (CA) models is not appropriate.However,this effect has seldom been investigated before.A rule about flexible safe space was brought forward which made the CA model accord with the real traffic better.What’s more,the simulation shows that the new model will enlarge traffic flow and suppress traffic jam.更多还原