25 CFR § 170.606 - How do legislation and procurement requirements affect the TTP?

---
identifier: "/us/cfr/t25/s170.606"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "25 CFR § 170.606 - How do legislation and procurement requirements affect the TTP?"
title_number: 25
title_name: "Indians"
section_number: "170.606"
section_name: "How do legislation and procurement requirements affect the TTP?"
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: "2026-04-05"
last_updated: "2026-04-05"
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"
---


# 170.606 How do legislation and procurement requirements affect the TTP?

Other legislation and procurement requirements apply to the TTP as shown in the following table:

| Legislation, regulation or other requirement | Applies to Tribes under self-determinationcontracts | Applies to Tribes under self-governanceagreements | Applies to Tribes under BIA or FHWA program agreements | Applies toactivitiesperformed by the Secretary |
| --- | --- | --- | --- | --- |
| Buy Indian Act | No | No | No | Yes. |
| Buy American Act | No | No | No | Yes. |
| Federal Acquisition Regulation (FAR) | No(a) | No | No | Yes. |
| Federal Tort Claims Act | Yes | Yes | Yes | Yes. |
| Davis-Bacon Act | Yes(b) | Yes(b) | Yes(b) | Yes. |
| (a) Unless agreed to by the Tribe or Tribal organization under ISDEAA, 25 U.S.C. 450j(a), and 25 CFR 900.115. |  |  |  |  |
| (b) Does not apply when Tribe performs work with its own employees. |  |  |  |  |