Nope no specific knowledge, just a decent amount of trucker griping. The stopping distance of trucks is much longer so the triggering distance on these devices must be correspondingly longer as well. A lot of cars don't even realize they cut off the truck because they can stop so much faster.
A trucker can assume that a car cutting them off with open road in the front won't slam their brakes. These devices can't.
A trucker can assume that a car cutting them off with open road in the front won't slam their brakes. These devices can't.