A comparative analysis of European railroads efficiency: a cost frontier approach
The paper analyses the issue of cost efficiency for eight main European railroads in a sample period of 17 years. Measures of technical and allocative efficiency are obtained from a stochastic cost frontier model, with minimal cost described by a translog cost system. In the model, the cost of allocative inefficiency is estimated simultaneously from the shares' errors, whereas technical inefficiency is modelled by a (half normal) positive departure from the cost frontier. Results show a negligible effect of allocative inefficiency on firms' costs, whereas the cost of technical inefficiency appears to be significant.