25 CFR § 170.405
How must Tribes use planning funds?
February 24, 2021
TTP funds as defined in 23 U.S.C. 202(c) are available to a Tribal government to support Tribal transportation planning and associated activities, including:
(a) Attending transportation planning meetings;
(b) Pursuing other sources of funds; and
(c) Developing the Tribal priority list, TTIP, LRTP, or any of the transportation planning functions and activities listed in §170.402.