I don't go over 75,try not to go over 73ish on hills,but my co-workers fly by me on several hills,they gotta be goin at least 80,when I ask how fast they were goin,they just laughWith XPO tractors , the hill would have to be near outer space for enough speed to go 15mph over. Or the trailer pushing you down the hill would have to be overweight by 10 tons.
15 mph over. Damn. I can't imagine any XPO tractor getting close.
I'm sure someone will post that they have since I've said this...