文献类型：期刊文献

英文题名：Route Optimization of Hazardous Material Railway Transportation Based on Conditional Value-at-Risk Considering Risk Equity

作者：Liu, Liping[1];Sun, Shilei[1];Li, Shuxia[1]

机构：[1]East China Univ Sci & Technol, Sch Business, Shanghai 200237, Peoples R China

年份：2025

卷号：13

期号：5

外文期刊名：MATHEMATICS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001442607500001)】；

基金：This research was funded by the National Natural Science Foundation of China (72442009, 72032001, 72074076, 71302043); Ministry of Education, Humanities and Social Sciences Research Planning Foundation (21YJA630057).

语种：英文

外文关键词：hazardous material; railway transportation; risk equity; CVaR; route optimization

摘要：Rail transportation of hazardous material (Hazmat) involves low-probability, and high-consequence risks, requiring strategies that mitigate extreme accident impacts while ensuring fair risk distribution. To address this, we introduce conditional value-at-risk with equity (CVaRE) into railway Hazmats risk assessment, enabling flexible decision-making that balances risk minimization and equity considerations. Unlike conventional models that focus solely on risk reduction, CVaRE incorporates a risk equity goal, ensuring a more balanced distribution of risk across transportation routes. This study develops a novel CVaRE model that replaces fixed threshold constraints with a dynamic risk equity goal, providing greater flexibility in risk distribution adjustments. A k-shortest path-based algorithm was designed to balance extreme risk minimization with equitable risk allocation in route selection. A case study on the Yangtze River Delta railway network validates the model, demonstrating that moderate cost increases can significantly reduce extreme accident risks while achieving fairer risk distribution. Findings also show that direct transportation improves risk equity over transfer-based routes, highlighting the importance of strategic route planning. This research offers practical decision support for transport companies and regulators, helping optimize routes while ensuring cost efficiency and regulatory compliance. It also provides a scientific foundation for risk-equity-based policies, promoting safer, more sustainable Hazmat railway transportation.