Typical vehicle dynamics maneuver: steering wheel input

Sine with dwell, frequency response, swept steer, step steer… are typical vehicle dynamics maneuvers. Their steering wheel angle inputs can be described with a function of time, like SWA=a* sin(b* t), SWA=c*t, … (a,b,c are constant values).
(Background information is attached below)

Currently this is not covered in the standard. An extension is desired.