At 9:45am Baltimore Co. Fire Dispatch alerted units for a motor vehicle accident at Hanover Pike and Weywood Drive.  As dispatch received more calls, a full rescue assignment was alerted.  Rescue Squad 414 found a overturned tractor trailer blocking all lanes and one vehicle into a telephone pole.  After assessing the scene, crews found on occupant trapped in both vehicles.  Both patients were extricated within 15 minutes.  A Haz Mat box was requested for diesel fuel leaking from the tractor trailer.