All the latest technology trucks are equipped with, serves only as support. It can’t take control of the vehicle and very rarely react proactively in advanced. That is yet to come.
Until that kind of self-driving technology is fully developed, truck drivers are still required to pay attention to the road and prevent as much as they can possible problems on the road.
Hard Braking Can Cause Rear End Collision
Highway network around big cities is very often really crowded and vehicles are driving and moving really close one to another. Applying hard braking can cause the immediate rear end collision and someone could crash into you from the back.
Despite there is no legal responsibility for an accident like this and this is 100% responsibility for the person not keeping the appropriate distance this can cause a lot of issues for you too.