Nagatani T
Division of Thermal Science, Department of Mechanical Engineering, Shizuoka University, Hamamatsu, Japan.
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics. 2000 Apr;61(4 Pt A):3534-40. doi: 10.1103/physreve.61.3534.
We present a phase diagram of the different kinds of congested traffic triggered by fluctuation of a leading car in an open system without sources and sinks. Traffic states and density waves are investigated numerically by varying the amplitude of fluctuation using a car following model. The phase transitions among the free traffic, oscillatory congested traffic, and homogeneous congested traffic occur by fluctuation of a leading car. With increasing the amplitude of fluctuation, the transition between the free traffic and oscillatory traffic occurs at lower density and the transition between the homogeneous congested traffic and the oscillatory traffic occurs at higher density. The oscillatory congested traffic corresponds to the coexisting phase. Also, the moving localized clusters appear just above the transition lines.
我们给出了在一个无源汇的开放系统中，由前车波动引发的不同类型拥堵交通的相图。通过使用跟车模型改变波动幅度，对交通状态和密度波进行了数值研究。自由交通、振荡拥堵交通和均匀拥堵交通之间的相变是由前车的波动引起的。随着波动幅度的增加，自由交通和振荡交通之间的转变发生在较低密度处，而均匀拥堵交通和振荡交通之间的转变发生在较高密度处。振荡拥堵交通对应于共存相。此外，移动的局部簇出现在转变线之上。
