The Lorry ( tractor ) rear
The rear (those balloons (what do we call them?) are for the air suspension for the rear most axle)
The rear suspension - bottom view (see the suspension of the leaf, which holds the rear axle)
The rear suspension - top view, see the shocker, as well as the same mounting points as seen from top
Front support for the leaf
Is that a tracking/locating arm? (The axle before this, has just the reverse arrangement, i.e left end connected to frame rail, right end to the axle housing.)
Peek-a-boo onto the front of the front suspension (rear of the front suspension was a simple hook-up to the metal frame which the camera could not manage to capture). Front suspension looks like pure leaf, although the cab is suspended on air, on top of the frame.
Thats how we see those trucks (and say oh its just a truck!)
When you see this on your RVM better move over!
Experts please start your engines