Rapid acceleration was of less importance than comfort and therefore the trains were solidly constructed, which resulted in a relatively high weight per seat and gave a very smooth and (for that time) very comfortable run.

It is still the heaviest passenger train type to ever ride a European railway.

[3][4][5][1] A variant is the NS Mat '57 for Benelux-service which was equipped to ride with the difference in electric current used on the Dutch and Belgian railways so it could connect Amsterdam, The Hague and Rotterdam with Antwerp and Brussels.

The reason that it took twelve years was because the green paint lasted very well and the Dutch railways tried to cut costs wherever possible.

[2][5] This European rail transport related article is a stub.