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Traffic flow microscopic simulation method based on car following behavior

A technology of microscopic simulation and traffic flow, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of small maximum traffic volume and inability to describe metastable properties near critical points, etc.

Inactive Publication Date: 2013-03-13
SOUTHEAST UNIV
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Problems solved by technology

The most representative cellular automaton model is the NaSch model proposed by Nagel and Schrekenberg, which can describe some actual traffic phenomena, but the simulated maximum traffic volume is smaller than the measured data, and cannot describe the metastable state near the critical point nature

Method used

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  • Traffic flow microscopic simulation method based on car following behavior
  • Traffic flow microscopic simulation method based on car following behavior
  • Traffic flow microscopic simulation method based on car following behavior

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Embodiment Construction

[0028] The present invention is further illustrated by the following examples. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. After reading the description of the present invention, those skilled in the art will modify various equivalent forms of the present invention All fall within the scope defined by the claims of the present application.

[0029] The traffic flow micro-simulation method based on car-following behavior of the present invention, flow process is as follows figure 1 As shown, the specific steps are as follows:

[0030] 1) Initial setting:

[0031] The road is regarded as a discrete grid point chain composed of rlength cells. The size of the cell is csize. A cell value equal to 1 indicates that the position on the road is occupied by a vehicle, and a cell value equal to 0 indicates that the road is on the road. The position is not occupied by a ve...

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Abstract

The invention discloses a traffic flow microscopic simulation method based on car following behavior, which adopts a novel cellular automaton model to perform traffic flow microscopic simulation, and comprises the following steps: 1) start setting; 2) beginning to update from the first updating car a; 3) updating the state of the car i; 4) updating the front driving space of the car at the back; 5) acquiring simulation data; and 6) judging the simulation ending conditions. The model adopted by the method adopts a small cellular size; the car characteristics and the driving behavior can be finely adjusted according to the adjusting parameters, so as to facilitate the traffic flow simulations under different conditions. The simulated flow of the model is well matched with the actual measured data, and can describe the meta-stable state and the hysteresis phenomenon of the traffic system.

Description

technical field [0001] The invention belongs to the field of traffic flow microcosmic models in traffic flow theory, and relates to a traffic flow microcosmic simulation method. Background technique [0002] Since the middle of the 20th century, traffic problems have attracted a large number of scientists to study them due to their complexity and practical significance. The cellular automaton (CA) model is a mathematical model with discrete time, space, and variables. It has the characteristics of simple rules, flexible adjustment, and easy programming. It has been widely used in traffic flow research in recent years. . The most representative cellular automaton model is the NaSch model proposed by Nagel and Schrekenberg, which can describe some actual traffic phenomena, but the simulated maximum traffic volume is smaller than the measured data, and cannot describe the metastable state near the critical point nature. Based on the NS model, many improved models have been p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 季彦婕敬明邓卫
Owner SOUTHEAST UNIV
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