For truckers, conquering mountains and steep terrain is a downhill battle. And yes, things can go downhill very fast when an 80,000-pound loaded truck experiences brake failure, or worse, when a driver makes a serious error.
Drivers who find themselves at the mercy of momentum quite literally receive a crash course in the laws of physics as their speed becomes uncontrollable. Thankfully, some of the country’s most treacherous highways are equipped with escape routes for trucks in momentum mayday.
https://www.freightwaves.com/news/conquering-mountains-is-a-downhill-battle