THE CELL TRANSMISSION MODEL - A DYNAMIC REPRESENTATION OF HIGHWAY TRAFFIC CONSISTENT WITH THE HYDRODYNAMIC THEORY
THE CELL TRANSMISSION MODEL - A DYNAMIC REPRESENTATION OF HIGHWAY TRAFFIC CONSISTENT WITH THE HYDRODYNAMIC THEORY
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DOI：
10.1016/0191-2615(94)90002-7
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发表时间：
1994-08-01
影响因子：
6.8
通讯作者：
DAGANZO, CF
中科院分区：
文献类型：
--
作者：
DAGANZO, CF
本文提出了一个简单的表示交通在一个单一的入口和出口的高速公路。该表示可用于预测流量随时间和空间的演变，包括瞬态现象，如队列的建立、传播和消散。用于预测交通演变的易于求解的差分方程被证明是交通流的流体动力学模型的特殊情况下所产生的微分方程的离散模拟。所提出的方法在流体动力学理论要求冲击波的位置自动产生适当的密度变化;即，密度的跳跃，例如通常在每个队列的末尾看到的密度的跳跃。因此，消除了经典方法跟踪激波所需的复杂侧边计算。本文还展示了如何方程可以模拟移动队列中的走走停停的交通的现实发展。
This paper presents a simple representation of traffic on a highway with a single entrance and exit. The representation can be used to predict traffic's evolution over time and space, including transient phenomena such as the building, propagation, and dissipation of queues. The easy-to-solve difference equations used to predict traffic's evolution are shown to be the discrete analog of the differential equations arising from a special case of the hydrodynamic model of traffic flow. The proposed method automatically generates appropriate changes in density at locations where the hydrodynamic theory would call for a shockwave; i.e., a jump in density such as those typically seen at the end of every queue. The complex side calculations required by classical methods to keep track of shockwaves are thus eliminated. The paper also shows how the equations can mimic the real-life development of stop-and-go traffic within moving queues.