A program for simulating the dispersion of platoons of road traffic
A program for simulating the dispersion of platoons of road traffic
复制标题
模拟道路交通队列分散的程序
DOI：
10.1177/003754977201800301
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发表时间：
1972
期刊：
影响因子：
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通讯作者：
P. A. Seddon
中科院分区：
文献类型：
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作者：
P. A. Seddon
许多交通现象都是随机的，由于它们往往太复杂而不能用合理的数学模型来表示，因此人们对它们进行了数字模拟研究。此外，经验法则很难获得，因为道路上的条件很少能在足够长的时间内保持稳定以获得可靠的数据。大多数模拟已经进行，以确定最大流量，队列长度，延迟等方面的冲突的交通流量，司机的行为帕拉等，这种类型的模拟的一些例子中提到的文件。作者的模拟程序，但是，被写的信息车辆的行为在队列分散过程中。在充分模拟了停车线处的起始条件和道路沿着点处的到达模式后，假设该过程中的车辆行为也被准确模拟。停车线上的车辆排队长度是随机的，车辆类型和性能帕拉是随机选择的。每条车道上的领先车辆根据指数规律加速，而其他车辆根据一个或另一个车辆跟随规律被给予加速度。一种新的技术允许考虑驾驶员的反应时间。车辆可以从主干道转弯并超车，模拟程序在每次扫描时给出每辆车的位置、速度和加速度的数据。本文详细描述了组成整个复杂分散过程的更重要的步骤以及为验证模拟而采取的各种措施。
Digital simulation studies have been carried out on many traffic phenomena because, being stochastic, they are frequently too complex to be represented by a reasonable mathematical model. Furthermore, empirical laws are difficult to obtain because con ditions on the road rarely remain stable for a sufficient time to obtain reliable data. Most simulations have been carried out to determine maximum flows, queue length, delays, etc. in terms of conflicting traffic flow, driver behaviour para meters, etc. A number of examples of this type of simulation are mentioned in the paper. The author's simulation program, however, was written to give information on vehicle behaviour within the platoon dispersion process. Having modelled starting condi tions at the stopline and arrival patterns at points along the road sufficiently well, it was assumed that vehicle behaviour within the process was also being accurately modelled. The queues of vehicles at stopline are of random length with randomly selected vehicle type and random performance para meters. Leading vehicles in each lane accelerate according to an exponential law, and other vehicles are given accelerations according to one or other of the car- following laws. A novel technique allows driver reaction time to be taken into account. Vehicles may turn from the main road and overtake, the simulation program giving data on every vehicle's position, speed, and acceleration at each scan. The paper describes in detail the more important of the steps which make up the whole complex dispersion process and the various measures taken to verify the simulation.