It's definitely unclear to me what to do if a person is trapped under a tire. Driving more may cause more injury or allow more bleeding from the existing injury. I guess a human driver would call 911 and the dispatcher may provide advice on what to do or suggest to wait for emergency services.
I think the bigger issue is the decision to move the vehicle after a collision involving a person not in a car. I've not had the misfortune to be in such a collision, but in the collisions I've been in, I would get out, and inspect the situation before taking any further action. Moving out of traffic is a good thing to do, but especially if there's a person, it's important to consider the situation before further movement. Even if it were just a vehicle to vehicle collision, I'd want to check if someone needed urgent medical attention, and acknowledge the collision with the other driver, make a plan for where to stop to discuss, and check for and clear any obviously sharp debris that may pierce tires of my vehicle or others' vehicle. A lot of that is outside the capability of an automated vehicle... but maybe human review before pulling to a safer place is a good choice especially if a person outside of a car is involved in the collision.
I think the bigger issue is the decision to move the vehicle after a collision involving a person not in a car. I've not had the misfortune to be in such a collision, but in the collisions I've been in, I would get out, and inspect the situation before taking any further action. Moving out of traffic is a good thing to do, but especially if there's a person, it's important to consider the situation before further movement. Even if it were just a vehicle to vehicle collision, I'd want to check if someone needed urgent medical attention, and acknowledge the collision with the other driver, make a plan for where to stop to discuss, and check for and clear any obviously sharp debris that may pierce tires of my vehicle or others' vehicle. A lot of that is outside the capability of an automated vehicle... but maybe human review before pulling to a safer place is a good choice especially if a person outside of a car is involved in the collision.