The car is facing the centre reservation, it may be the car was overtaking on the nearside and tried to nip in front of the truck/
Even if it was the case the truck driver should have known a collision had occurred.
One of my scariest moments on my commute home along the M5 Oldbury viaduct was when an articulated truck overtook me - as his cab went past me, I noticed out of the corner of my eye his indicator was on and he started to move left immediately. On my left, blocking the hard shoulder, was a stretch of temporary concrete walling - and no amount of slamming on brakes would have prevented his trailer from crushing my car against the concrete, not braking would have given me wrap-around, putting my foot down would have had the same result but faster. Just then a gap appeared in the concrete so I braked and swerved through that, scattering cones galore, missing the concrete by inches, the truck missing me by inches as it moved over.
Of course I was surrounded by people anxious to help, or giving me room to get back out from the road works. Not. (Sounds familiar, eh!)
Brompton, Condor Heritage, creaky joints and thinning white (formerly grey) hair
""You know you're getting old when it's easier to ride a bike than to get on and off it" - quote from observant jogger !