25 CFR § 170.402 - What is the Tribal role in transportation planning?

---
identifier: "/us/cfr/t25/s170.402"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "25 CFR § 170.402 - What is the Tribal role in transportation planning?"
title_number: 25
title_name: "Indians"
section_number: "170.402"
section_name: "What is the Tribal role in transportation planning?"
chapter_name: "BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR"
subchapter_number: "H"
subchapter_name: "LAND AND WATER"
part_number: "170"
part_name: "TRIBAL TRANSPORTATION PROGRAM"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Pub. L. 112-141, Pub. L. 114-94; 5 U.S.C. 2; 23 U.S.C. 201, 202; 25 U.S.C. 2, 9."
regulatory_source: "81 FR 78463, Nov. 7, 2016, unless otherwise noted."
cfr_part: "170"
---


# 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;

(6) Mapping;

(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.