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<p>Finalizing and designing rail alignment between origin and destination can have multiple options, and with the trial-and-error method, one can lose a valuable solution among the choices. To address this, the present study applies Stepwise Weight Assessment Ratio Analysis (SWARA), a multi-criteria decision-making (MCDM) method. The various criteria that can affect the selection of the alternative alignment are Engineering, Structural, Social, Environmental, and Cost. It is found that, among all the criteria, the Engineering aspects emerge as the most critical factor, with the highest weight of 0.617, followed by Structural aspects with a weight of 0.236, reflecting their substantial role in the evaluation process. The study results showed that the total length of alignment (global weight = 0.088) is one of the important criteria among the engineering aspects. Further, the number of tunnels, the total land acquisition required, the coastal regulation zone, and the total cost (including land) are the main criteria for selecting the best rail alignment. The study results can be used by field engineers and policy makers for finalizing the best-suited rail alignment.</p>

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How to choose the best alignment for railways: an MCDM approach

  • 期刊论文

  • 发表日期：

    2026年6月2日

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  • Navin Chatla,
  • Yashh Jadhav,
  • Chintaman Bari,
  • Aruna Thube

摘要

Finalizing and designing rail alignment between origin and destination can have multiple options, and with the trial-and-error method, one can lose a valuable solution among the choices. To address this, the present study applies Stepwise Weight Assessment Ratio Analysis (SWARA), a multi-criteria decision-making (MCDM) method. The various criteria that can affect the selection of the alternative alignment are Engineering, Structural, Social, Environmental, and Cost. It is found that, among all the criteria, the Engineering aspects emerge as the most critical factor, with the highest weight of 0.617, followed by Structural aspects with a weight of 0.236, reflecting their substantial role in the evaluation process. The study results showed that the total length of alignment (global weight = 0.088) is one of the important criteria among the engineering aspects. Further, the number of tunnels, the total land acquisition required, the coastal regulation zone, and the total cost (including land) are the main criteria for selecting the best rail alignment. The study results can be used by field engineers and policy makers for finalizing the best-suited rail alignment.