Pehlivanlı, Edib Ali2024-05-272024-05-2720231309-91322147-7833https://hdl.handle.net/20.500.12451/11883Benchmarking is frequently used in strategic management, while it may not be possible to compare companies such as Turkish Railways (TCDD) with their competitors due to unique structures. In such cases, the dynamic data envelopment analysis method, which is based on the ratio of outputs to inputs with the company's long-term data, can be used. One of the advances in data envelopment analysis in recent years is the ability to include undesired outputs. While determining the best practice, undesirable factors as railway accidents should also be considered for performance evaluation. To my knowledge, there is no study considering accidents in railway performance evaluation. In this context, this study aims to evaluate the performance of railways with 17-year data of TCDD, considering railway accidents, which are undesirable outputs for railways. In this way, it is aimed to contribute to the railway performance evaluation literature by adding undesirable outputs. The total length (km) and the number of personnel are inputs, the total number of passengers and the total freight are desired outputs, and the number of railway accidents is undesired output. The findings show that the best practice example for TCDD is 2013. The findings suggest that practitioners and decision makers should consider undesirable outputs in performance measurement. In addition, suggestions made to the researchers regarding the studies to be carried out within the framework of green management considering undesirable outputs.Benchmarking is frequently used in strategic management, while it may not be possible to compare companies such as Turkish Railways (TCDD) with their competitors due to unique structures. In such cases, the dynamic data envelopment analysis method, which is based on the ratio of outputs to inputs with the company's long-term data, can be used. One of the advances in data envelopment analysis in recent years is the ability to include undesired outputs. While determining the best practice, undesirable factors as railway accidents should also be considered for performance evaluation. To my knowledge, there is no study considering accidents in railway performance evaluation. In this context, this study aims to evaluate the performance of railways with 17-year data of TCDD, considering railway accidents, which are undesirable outputs for railways. In this way, it is aimed to contribute to the railway performance evaluation literature by adding undesirable outputs. The total length (km) and the number of personnel are inputs, the total number of passengers and the total freight are desired outputs, and the number of railway accidents is undesired output. The findings show that the best practice example for TCDD is 2013. The findings suggest that practitioners and decision makers should consider undesirable outputs in performance measurement. In addition, suggestions made to the researchers regarding the studies to be carried out within the framework of green management considering undesirable outputs.eninfo:eu-repo/semantics/openAccessStrategic ManagementData Envelopment Analysis with Undesirable OutputsDynamic AnalysisRailway PerformanceStratejik Yönetimİstenmeyen Çıktılı Veri Zarflama AnaliziDinamik AnalizRaylı Sistem PerformansıArticle254510961109