The Type ID (TID) of a DBPF Object is the first set of eight hexadecimal numbers making up the object's Type Group Instance (TGI) address. As an example, in the TGI "AAAAAAAA BBBBBBBB CCCCCCCC", the sequence "AAAAAAAA" is the object's TID. They are used in SimCity 4 and SimCity (2013) to organize related objects of the same file type, which are then further defined by use of the Group ID and Instance ID.
Some of the common Type ID's used in SC4 are:
|05342861||Cohorts - higher level exemplars.|
|5ad0e817||S3D - A type of graphics file.|
|6534284a||Exemplars - files that contain important game-defining properties.|