Except as provided in §170.402, the functions and activities that BIA and/or FHWA must perform for the TTP transportation planning are:

(a) Reviewing, and approving the TTPTIP as well as providing technical assistance to the Tribes during the development of their TTIP or Priority List:

(b) Oversight of the NTTFI;

(c) Performing quality assurance and validation of NTTFI data updates as needed;

(d) Coordinating with States and their political subdivisions and appropriate planning authorities on regionally significant TTP projects;

(e) Providing technical assistance to Tribal governments;

(f) Developing TTP budgets;

(g) Facilitating public involvement;

(h) Participating in transportation planning and other transportation-related meetings;

(i) Performing quality assurance and validation related to performing traffic studies;

(j) Performing preliminary project planning or project identification studies;

(k) Conducting special transportation studies;

(l) Developing short- and long-range transportation plans;

(m) Mapping;

(n) Developing and maintaining management systems;

(o) Performing transportation planning for operational and maintenance facilities; and

(p) Researching rights-of-way documents for project planning.