I’ve not seen the pictures but I have delivered into that place, assuming it was an articulated truck the driver should indeed have used the roundabout to exit as leaving a trailer across a carriageway is not wise for this very reason.It appears the truck has pulled out the hire place, across the road and stopped in the mid section of the road with the back end of his truck stuck out waiting to turn right, he shouldn't have done this and instead should have driven 1km down the road to the roundabout.
It would have been full daylight at that time of day at this time of year, I doubt the truck had any lights on.
Trucks do have side impact bars although in my experience they are nigh useless at anything other than very low speed collisions, if the car ended up under the truck it’s not hard to deduce which sort of collision this was.
Sad, very sad.