Not every scene is a model of efficiency. I stopped to help a bicyclist who had been struck by a car. EMS came up with a backboard, and I was squatting to help with the body roll, and the EMS guy just asked the victim to wiggle onto the board. That was a novel technique that we hadn't covered in any of my classes, but I am sure it save the EMS guy a lot of work..

Congratulations on stopping to help! Most people would not want to be involved.