We did

www.honestjohn.co.uk/forum/post/137830/all---emerg...y

Vindication for those that don't read every subject.

So say I've bought one of these new fangled self driving cars and it comes up to a cattle grid. Am I stuck in the middle of the road until wind bourne erosion fills up the ditch?

IMO, the drivers got too close to the side of the grid where the wooden wall is/steel bars, as my old Civic with the same or similar system never had a problem with Cattle grids, there are a fair few on the Isle of Wight which I have been across and never has the collision mitigation system come on

if you get too close to a wall it will, and has done, but not going through centrally over the grid.