APJIS Asia Pacific Journal of Information Systems

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The Journal for Information Professionals

Asia Pacific Journal of Information Systems (APJIS) is published by the Korea Society
of Management Information Systems (KMIS), which is the largest professional institute
in the field of information systems in Korea.

ISSN 2288-5404 (Print) / ISSN 2288-6818 (Online)

Editor : Hee-Woong Kim

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Current Issue

Date September 2016
Vol. No. Vol. 26 No. 3
DOI http://dx.doi.org/10.14329/apjis.2016.26.3.427
Page 427~448
Title Stochastic Traffic Congestion Evaluation of Korean Highway Traffic Information System with Structural Changes
Author Yongwoong Lee, Saebom Jeon, Yousung Park
Keyword Structure-changing Parameter, Reversible Lane, Congestion Flow, Congestion Cost, Scenario Analysis
Abstract The stochastic phenomena of traffic network condition, such as traffic speed and density, are affected not only by exogenous traffic control but also by endogenous changes in service time during congestion. In this paper, we propose a mixed M/G/1 queuing model by introducing a condition-varying parameter of traffic congestion to reflect structural changes in the traffic network. We also develop congestion indices to evaluate network efficiency in terms of traffic flow and economic cost in traffic operating system using structure-changing queuing model, and perform scenario analysis according to various traffic network improvement policies. Empirical analysis using Korean highway traffic operating system shows that our suggested model better captures structural changes in the traffic queue. The scenario analysis also shows that occasional reversible lane operation during peak times can be more efficient and feasible than regular lane extension in Korea.

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