Originally Posted by
Korina
I was visualizing the truck turning behind her and the trailer swinging wide, as they do.
That's not how the geometry works out.
A truck swings wide by initially moving beyond the closest turn lane, away from the turn. As the turn itself develops the back of the truck then takes a tighter turn and at some point may have a substantial sideways movement in towards the corner, run over the curb, etc - which is why they start the turn wide.
For someone to be hit by or collide with the side of the truck, the truck has to turn in front of them.
If the truck turns behind them, they get hit by the front of the truck. But people and objects in front are also most visible to the driver.