Did they assume that people actually know how to use them? If so I think thats a major flaw in their test as most drivers in the US are too stupid to use them appropriately.
These are very uncommon in my area until about 3 years ago. They put two of them on a major highway in the middle of nowhere. You drop from 55 down to 25 and can barely enter them even at the 25mph.
Better than stopping, but only barely.
Did they assume that people actually know how to use them? If so I think thats a major flaw in their test as most drivers in the US are too stupid to use them appropriately.