All of them apparently. But the best just does it as <15mph.

The Forester was able to provide timely warnings in all testing scenarios, and was able to slow down enough to avoid colliding with the target at 31 and 37 mph speeds. At 43 mph, AEB reduced the speed by an average of 32 mph when the motorcycle was in the center of the lane, and by 29 mph when it was offset. While that was considered “good”, it still means the Forester hit the motorcycle target at a speed of 12 mph when it was in the middle of the lane, and 14 mph when it was to the left or to the right. Either speed is still enough to do significant damage, but it only gets worse from here.