Station 3 responded this morning for a rescue in Marriottsville. At 03:03 the tones sounded for a reported collision on eastbound I-70 east of Marriottsville Road. Callers reported that a van struck the back of a tractor trailer and that the occupant of the van was trapped. Upon arrival Tower 3 located the incident as dispatched and began extrication of the van driver, after which the patient was turned over to Paramedic 35 and transported to the University of Maryland Shock Trauma Center in Baltimore. Eastbound I-70 was shut down during the incident and units cleared at 03:55.