We analyse maintenance cost data for Swedish railway infrastructure in relation to traffic volumes andnetwork characteristics, and separate the cost impact from passenger and freight trains. Lines with mixedpassenger and freight traffic, and dedicated freight lines are analysed separately using both log-linear andBox-Cox regression models. We find that for mixed lines, the Box-Cox specification is preferred, while alog-linear model is chosen in the case of dedicated freight lines. The cost elasticity with respect to outputis found to be higher for passenger trains than for freight trains in the case of mixed lines. The costelasticity for freight trains on dedicated lines is higher than for freight trains on mixed lines. From amarginal cost pricing perspective, freight trains on mixed lines are currently over-charged, whilepassenger trains on mixed lines and freight trains on dedicated lines are under-charged.
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