That semi truck drivers are arrogant pricks is a given. Just about everything else on the road is smaller than them so they drive without any regards for other traffic participants. But you’d think that since their livelihood depends on safely getting to and from their intended destinations, they wouldn’t take stupid risks, like driving up a curve so fast they’d risk flipping the truck.
Truck drivers who don’t understand that, are a liability to their employers and bound to cause financial loss sooner or later. One of them was caught on a dashcam as seen in the video below. Idiot definitely did not drive at a safe speed and paid for it by flipping the truck on the side, damaging not only the truck, but likely also the cargo in the trailer. I guess he’s fired.