Cant deficiency is generally looked at with respect to ideal track geometry. As geometry of real track is never perfect it may be desirable to supplement the static considerations laid out above with simulations of vehicle motion over measured geometries of actual tracks.
Cant deficiency is usually assessed in the context of perfect track geometry. However, as real tracks rarely possess ideal geometry, it might be prudent to incorporate simulations of vehicle movement over actual track geometries that have been precisely measured.