Comparison of national rail traffic loads which have been found to be significantly different in the different codes to the EN provisions is of vital importance.
Some publications on this subject can be found.
Modernization of European rail network with the aim to increase axle loads up to 33 tones for freight traffic and the maximum speeds up to 350 km/hour for passenger traffic is leading to the need to reevaluate loading conditions for high-speed railway bridges.
Note that there are significant cost benefits in the use of heavier and rapid trains.