Stability control was made mandatory on passenger vehicles for this current model year, but it's still not a requirement for semis and busses. But that could soon be changing, as the National Highway Traffic Safety Administration has proposed requiring the technology on all new large commercial trucks, motorcoaches, and other large buses.
Passenger cars and light-duty trucks will be subjected to stringent new emission standards in the near future. Heavy-duty vehicles are not being left out of the mix and will have their own regulations intended to slowly lead to cleaner vehicles delivering goods across the nation. That's a good thing.