40 CFR § 202.11 - Effective date.

---
identifier: "/us/cfr/t40/s202.11"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 202.11 - Effective date."
title_number: 40
title_name: "Protection of Environment"
section_number: "202.11"
section_name: "Effective date."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "G"
subchapter_name: "NOISE ABATEMENT PROGRAMS"
part_number: "202"
part_name: "MOTOR CARRIERS ENGAGED IN INTERSTATE COMMERCE"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Sec. 18, 36 Stat. 1249, 42 U.S.C. 4917(a)."
cfr_part: "202"
---


# 202.11 Effective date.

The provisions of Subpart B shall become effective October 15, 1975, except that the provisions of § 202.20(b) and § 202.21(b) of Subpart B shall apply to motor vehicles manufactured during or after the 1986 model year.

[51 FR 852, Jan. 8, 1986]