We really don’t know if the person is unconscious or not.
If the person is really on the street then he or she may be in danger of passing vehicles. Esp cars and trucks.
So if the person can move, that would be helpful. It could be someone who is high or in another mental state that will take instruction to move.
If the person is not moving or responding then some protective barrier should be arranged to divert traffic from the vulnerable person and make a way for emergency responders to arrive to the scene.