Comfortable-driving(CD) Model

Simple cellular automata models are able to reproduce the basic properties of highway traffic. The comparison with empirical data for microscopic quantities requires a more detailed description of the elementary dynamics. Based on existing cellular automata models, an improved discrete model incorporating anticipation effects was proposed, reduced acceleration capabilities and an enhanced interaction horizon for braking. The modified model is able to reproduce the three phases (free-flow, synchronized, and stop-and-go) observed in real traffic. Furthermore we find a good agreement with detailed empirical single-vehicle data in all phases.

highway traffic

true

Contributor(s)

Initial contribute: 2020-11-15

Authorship

:  
Theoretische Physik FB 10, Gerhard-Mercator-Universit¨at Duisburg, Lotharstr. 1, D-47048 Duisburg, Germany
:  
Laboratoire de Physique Statistique, ´Ecole Normale Sup´erieure, 24, rue Lhomond, F-75231 Paris Cedex 05, France
:  
Institut f¨ur Theoretische Physik, Universit¨at zu K¨oln, Z¨ulpicher Str. 77, D-50937 K¨oln, Germany
:  
Theoretische Physik FB 10, Gerhard-Mercator-Universit¨at Duisburg, Lotharstr. 1, D-47048 Duisburg, Germany
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Detailed Description

English {{currentDetailLanguage}} English

Quoted from: https://iopscience.iop.org/article/10.1088/0305-4470/33/48/103/meta?casa_token=j0ztucXktyoAAAAA:uutqQcFxLHMW4FwG1zjk18iGXjgg29pdTjnpnHsL3msrVE0sKORvg_h-qq6ZFK1iJD_tPj_yrzK_ Knospe W, Santen L, Schadschneider A, et al. Towards a realistic microscopic description of highway traffic[J]. Journal of Physics A: Mathematical and general, 2000, 33(48): L477.

These demands are incorporated by a set of update rules for the nth car, characterized by its position rn(t) and velocity vn(t) at time t. Cars are numbered in the driving direction, ie. vehicle n + 1 precedes vehicle n. The gap between consecutive cars (where l is the length of the cars) is dn = Fn+1 -In -1, and bn is the status of the brake light (on (off)→bn = 1(0)). In our approch the randomization parameter p for the nth car can take on three different values Po, Pa and Pb, depending on its current velocity Un(t) and the status bn+1 of the brake light of the preceding vehicle n+ 1:

if (bn+1 and th< ts) thenp(vn(t), bn+1(t), th, ts) = pbelif (vn == 0 ) thenp(vn(t), bn+1(t), th, ts) = p0elsep(vn(t), bn+1(t), th, ts) = pd

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Wolfgang Knospe, L Santen, A Schadschneider, M Schreckenberg (2020). Comfortable-driving(CD) Model, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/7bb97eb7-5ed1-4492-b303-f63a08858ee0
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Last modifier
XU Kai
Last modify time
2020-12-18
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Contributor(s)

Initial contribute : 2020-11-15

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Authorship

:  
Theoretische Physik FB 10, Gerhard-Mercator-Universit¨at Duisburg, Lotharstr. 1, D-47048 Duisburg, Germany
:  
Laboratoire de Physique Statistique, ´Ecole Normale Sup´erieure, 24, rue Lhomond, F-75231 Paris Cedex 05, France
:  
Institut f¨ur Theoretische Physik, Universit¨at zu K¨oln, Z¨ulpicher Str. 77, D-50937 K¨oln, Germany
:  
Theoretische Physik FB 10, Gerhard-Mercator-Universit¨at Duisburg, Lotharstr. 1, D-47048 Duisburg, Germany
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History

Last modifier
XU Kai
Last modify time
2020-12-18
Modify times
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