This woman made a impulsive move without thinking and was very lucky I'd guess.

The truck driver was probably (I'd guess again, like most all of us) driving too fast and upon seeing a car and woman next to the road, should have been off the loud pedal, moving as far away from them as possible and ready to brake with his foot on or over the brake pedal. I wonder if he even slowed down at all.

Safety is no accident. Safety comes with proper driving techniques and attention, not just keeping it upright and between the lines. Even driving a truck by a person near the road requires attention, especially on a gravel road. How about flying rocks hitting a pedestrian near the road? Any truckers want to talk about that?