(b) Tribes operating with a Program Agreement or BIA self-determination contract, TTP agreement, or self-governance agreement may assume any of the following planning functions:

1. (1) Coordinating with States and their political subdivisions, and appropriate planning authorities on regionally significant TTP projects;
2. (2) Preparing NTTFI data updates and ensuring that the data is entered into the NTTFI;
3. (3) Facilitating public involvement;
4. (4) Performing traffic studies;
5. (5) Developing short- and long-range transportation plans;
6. (6) Mapping;
7. (7) Developing and maintaining Tribal management systems;
8. (8) Participating in transportation planning and other transportation related meetings;
9. (9) Performing transportation planning for operational and maintenance facilities;
10. (10) Developing TTP budgets including transportation planning cost estimates;
11. (11) Conducting special transportation studies, as appropriate;
12. (12) Researching rights-of-way documents for project planning; and
13. (13) Performing preliminary project planning or project identification studies.