Online Training & Materials PART 86—CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES AND ENGINES Share SHARE Facebook share Twitter LinkedIn Copy URL Email Download Download part-86 en Added on: 02 March, 2026 Breadcrumb Home Resource Library PART 86—CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES AND ENGINES 40 CFR Part 86 is the U.S. federal regulation establishing requirements for controlling emissions from new and in-use highway vehicles and engines, covering test procedures and compliance provisions.It is a core reference for jurisdictions benchmarking regulatory design, certification approaches, and in-use compliance concepts for emissions standards programs.