Code of Federal Regulations · Section

§ 650.503 — Applicability

23 C.F.R. § 650.503

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The National Tunnel Inspection Standards (NTIS) in this subpart apply to all structures defined as highway tunnels on all public roads, on and off Federal-aid highways, including tribally and federally owned tunnels.

23 C.F.R. § 650.501 23 C.F.R. § 650.505

Authorizing Statute