When you try to insert this record:
INSERT INTO ROUTE VALUES ('7418','66','200','313');
You are assuming that there is a value in
DELIVERY with a
VEHICLE_VEH_ID value of
'200' and a
DELIVERY_DRIVER_DR_ID value of
'313'. There error is telling you that there is no such record in that table.
A foreign key constraint means that the column(s) with that constraint is/are constrained to only point to valid records in the foreign table. (In this case
DELIVERY.) Such a record must exist in that table before you can insert a dependent record in this table.