Model and algorithm of optimizing alternate traffic restriction scheme in urban traffic network
Guang-ming Xu , Feng Shi , Bing Liu , He-lai Huang
Journal of Central South University ›› 2014, Vol. 21 ›› Issue (12) : 4742 -4752.
An optimization model and its solution algorithm for alternate traffic restriction (ATR) schemes were introduced in terms of both the restriction districts and the proportion of restricted automobiles. A bi-level programming model was proposed to model the ATR scheme optimization problem by aiming at consumer surplus maximization and overload flow minimization at the upper-level model. At the lower-level model, elastic demand, mode choice and multi-class user equilibrium assignment were synthetically optimized. A genetic algorithm involving prolonging codes was constructed, demonstrating high computing efficiency in that it dynamically includes newly-appearing overload links in the codes so as to reduce the subsequent searching range. Moreover, practical processing approaches were suggested, which may improve the operability of the model-based solutions.
urban traffic congestion / alternate traffic restriction / equilibrium analysis / bi-level programming model
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