MULTIPLE ACCIDENTS;  NOTE: NO LANES BLOCKED ;   NORTHBOUND SLOW EXIT 8  RT 287 TARRYTOWN  TO THE TAPPAN ZEE, EXIT 10  ROUTE 9W NYACK  TO EXIT 13  PALISADES PKWY NANUET , THEN SLOW POCKETS OF VOLUME EXIT 15  RT 17 SUFFERN  TO EXIT 16  ROUTE 17 HARRIMAN .