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Understanding Traffic Breakdown: A Stochastic Approach

Kühne, Reinhart and Mahnke, Reinhard and Hinkel, Julia (2006) Understanding Traffic Breakdown: A Stochastic Approach. 16th ISTTT, 2007-07-22 - 2007-07-25, London (GB).

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Abstract

Observations from different freeways indicate that traffic breakdowns do not necessary occur at maximum flow and can occur at flows lower or higher than those traditionally accepted as capacity value. The notion breakdown means a stochastic transition from an uncongested traffic state to a congested state which is comparable with a phase transition in nature between different states of matter. Suggested by recent studies quoting data from German freeways the paper addresses the probabilistic approach for understanding of traffic breakdown. The phenomenon will be described by a balance equation which models the dynamics of jam formation similar to nucleation by two contributions only, called inflow or adhesion rate mainly depending on the traffic volume of the considered road section and discharge rate depending on the length of the congestion. With this balance equation it is feasible to calculate the dynamics of traffic pattern formation especially the first passage time distribution for a transition from free flow condition to congested traffic including the influence of the parameters affecting the adhesion and discharge rates.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Understanding Traffic Breakdown: A Stochastic Approach
Authors:
AuthorsInstitution or Email of Authors
Kühne, ReinhartUNSPECIFIED
Mahnke, ReinhardUni Rostock
Hinkel, JuliaUni Rostock
Date:2006
Refereed publication:Yes
In ISI Web of Science:No
Status:Accepted
Keywords:traffic breakdown, traffic flow, traffic pattern formation, stochastic approach
Event Title:16th ISTTT
Event Location:London (GB)
Event Type:international Conference
Event Dates:2007-07-22 - 2007-07-25
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Transport
HGF - Program Themes:V SH - Verbesserung der Sicherheit im Verkehr (old)
DLR - Research area:Transport
DLR - Program:V SH - Verbesserung der Sicherheit im Verkehr
DLR - Research theme (Project):V - Methodenentwicklung Fahrerassistenzlabor (old)
Location: Berlin-Adlershof
Institutes and Institutions:Verkehrsstudien
Deposited By: Sandra Zache
Deposited On:06 Dec 2007
Last Modified:15 Jan 2010 01:01

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