The linear acceleration is significant characteristic of the movement of a train, in relation to the maximum commercial speed, and then use the line capacity, in particular for certain types of traffic. In the case of the curve in the path, they define the residual radial acceleration limits or so-called “non-compensated” (from the track superelevation), for each Rank Speed – A, B, C and P – equal respectively to 0, 6 – 0.8 – 1 – 1.8 m / s2, essentially imposed by the driving comfort. P Rank refers to type “Pendolino” trains with tilting case.
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