A written set of uniform practices is generally worth something worth looking into, so I took a look here:
The part that I actually found more interesting in many respects was the set of Annexes, which include quite a number of checklists for controllability evaluation, safety analysis, and assessment methods as well as Human-Machine Interface concept selection.
I'd expect that this is a useful starting point for those working on higher levels of autonomy, and most critically anyone trying to take on the very difficult human/machine issues involved with level 2 and level 3 systems. (Whether it is sufficient on its own is not something I can say at this point, but starting with something like this is usually better than a cold start.)
If you have any thoughts about this document please let me know via a comment.