Home › CFR › Title 49 › Part 67049 CFR Part 670 — Public Transportation Safety ProgramSubpart A — General Provisions§ 670.1— Purpose and applicability.§ 670.3— Policy.§ 670.5— Definitions.Subpart B — Inspections, Investigations, Audits, Examinations and Testing§ 670.11— General.§ 670.13— Request for confidential treatment of records.Subpart C — Authorities§ 670.21— General.§ 670.23— Use or withholding of funds.§ 670.25— General directives.§ 670.27— Special directives.§ 670.29— Advisories.Subpart D — National Public Transportation Safety Plan§ 670.31— Purpose and contents of the National Public Transportation Safety Plan.