Section 170.402 - What is the Tribal role in transportation planning?(a) All Tribes must prepare a TTIP or Tribal priority list.(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) Coordinating with States and their political subdivisions, and appropriate planning authorities on regionally significant TTP projects;(2) Preparing NTTFI data updates and ensuring that the data is entered into the NTTFI;(3) Facilitating public involvement;(4) Performing traffic studies;(5) Developing short- and long-range transportation plans;(7) Developing and maintaining Tribal management systems;(8) Participating in transportation planning and other transportation related meetings;(9) Performing transportation planning for operational and maintenance facilities;(10) Developing TTP budgets including transportation planning cost estimates;(11) Conducting special transportation studies, as appropriate;(12) Researching rights-of-way documents for project planning; and(13) Performing preliminary project planning or project identification studies.