Delivery to small shops (of which there are plenty) can be motorbike:

Or semi:

But mostly by small trucks:

While longer-distance deliveries may handled by twin-steer straight trucks:

However, longer distances are handled by more conventional tractor-trailers, albeit using 3-axle trailers:

I did see one vehicle that looked like a used Schneider tractor - all the way from Green Bay, Wisconsin... so that is where old trucks go to die.