25 CFR 170.502 - Are nationwide management systems required for the TTP?
(a) To the extent appropriate, the Secretaries, in consultation with Tribes, will implement safety, bridge, pavement, and congestion management systems for the Federal and Tribal facilities included in the NTTFI.
(b) A Tribe may develop its own Tribal management system based on the nationwide management system requirements in 23 CFR part 973. The Tribe may use either TTP formula funds or transportation planning funds defined in 23 U.S.C. 202(c) for this purpose. The Tribal system must be consistent with Federal management systems.