All Tribes must prepare a TTIP or Tribal priority list.
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:
Coordinating with States and their political subdivisions, and appropriate planning authorities on regionally significant TTP projects;
Preparing NTTFI data updates and ensuring that the data is entered into the NTTFI;
Facilitating public involvement;
Performing traffic studies;
Developing short- and long-range transportation plans;
Mapping;
Developing and maintaining Tribal management systems;
Participating in transportation planning and other transportation related meetings;
Performing transportation planning for operational and maintenance facilities;
Developing TTP budgets including transportation planning cost estimates;
Conducting special transportation studies, as appropriate;
Researching rights-of-way documents for project planning; and
Performing preliminary project planning or project identification studies.