What question did this study set out to answer?

This research aims to identify optimal links in urban road networks to minimize overall congestion.

An Algorithm for the Discrete Network Design Problem

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Randomized trial determines optimal links to improve for minimizing congestion in urban road networks, suggesting effective strategies.

This research aims to identify optimal links in urban road networks to minimize overall congestion.
Developed a nonlinear mixed integer programming model
Implemented a branch-and-bound algorithm
Focused on computational efficiency for large-scale problems
Identified key links for improvement that significantly reduced congestion
Provided numerical results demonstrating the model's effectiveness
Outlined computational strategies that enhance performance in large instances

Larry J. LeBlanc (1975) studied this question.

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