40 CFR § 86.1840-01 - Special test procedures.

---
identifier: "/us/cfr/t40/s86.1840-01"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 86.1840-01 - Special test procedures."
title_number: 40
title_name: "Protection of Environment"
section_number: "86.1840-01"
section_name: "Special test procedures."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "C"
subchapter_name: "AIR PROGRAMS"
part_number: "86"
part_name: "CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES AND ENGINES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 7401-7671q."
cfr_part: "86"
---


# 86.1840-01 Special test procedures.

Provisions for special test procedures apply as described in 40 CFR 1065.10 and 1066.10. For example, manufacturers must propose a procedure for EPA's review and advance approval for testing and certifying vehicles equipped with periodically regenerating aftertreatment devices, including sufficient documentation and data for EPA to fully evaluate the request.

[89 FR 28180, Apr. 18, 2024]