Assuming the dilemma is either kill the person to get to the hospital or try to avoid it, I'd say stop and try to move the person. I don't know why the person is on the road and can only assume it's innocent, so it's better to avoid killing it and have a higher risk of the patient dying, than being sure to kill the person and being sure to save the patient.
Continuing:
- Kill person
- Save patient
vs
Stopping:
- Save person
- Possibly save patient