We've all wondered just how much damage a massive tractor trailer could do if it ever managed to lose control while traveling at high speeds out on open highways. Most mountain roads even have safety ramps for trucks to take should they lose their brakes while traveling down hill. However, most highways are not being fitted with their own runaway truck ramps. Some even include a "net" system designed to help slow down a semi when its own brakes are no longer an option.
