Four refusals?

I got to ride on the engine to this 10-50PI on NB 24 IAO 95 overpass. It looked pretty serious on arrival. The rescue and paramedic unit were already on scene with a total of four vehicle occupants from two vehicles either sitting or standing in the vicinity. Much to my surprise there were no transports from this incident, the ambulance crew obtained four signed refusals and cleared the scene. The rescue assisted with fluid cleanup and cleared also.