The route type code (RTTYP) describes the type of road. These codes can be found in the TIGER/Line products. The table below describes each code. For additional information about each road, see the definitions on the MAF/TIGER Feature Class Codes (MFTCC) page.
| Route Type Code | Route Type Code Description |
|---|---|
| C | County |
| I | Interstate |
| M | Common Name |
| O | Other |
| S | State recognized |
| U | U.S. |