抄録
This paper applies network data envelopment model (network DEA) to analyze the efficiency of urban railways, vertically integrated structure consisting of such division as “Maintenance”, “Operations”, and “Sales”. One of the advantages of network DEA is that it allows analyzing the efficiencies of each individual divisions as well as the efficiencies of an entire railway company. Ranking different management forms of urban railway business organization in order of productive efficiency1, this paper describes the special company was the most efficient on average, followed by private companies, third-sector railways, then municipal railway companies. Turning to profitability efficiency2, the third-sector companies were somewhat more efficient than the public and private railways across all divisions, but the significance level was low.
