Speaking only for my own Freightliner chassis, there's a diesel 7500 watt generator in the middle front making somewhat of a crumple zone, then there's the (admittedly minimal) drivers surround that FL uses on their diesel chassis. Floor plate, collapsing steering wheel shaft, roadside steel framing, etc.. And of course, the entire front end is attached to two heavy I beams running the entire length of the RV that support the engine. Couple that with the living room slide, when retracted, sort of shielding the driver from the back with a wall.
Couple all that with the fact that a large class a is very obvious to other drivers, I feel pretty safe as it is.
jorbill2or's insight based on expirience is very helpful...
