StacksVerified U.S. regulatory reference

40 CFR §86.422-78

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The Administrator may require additional test vehicles identical in all material respects to vehicles selected in accordance with § 86.421. The number of vehicles selected shall not increase the size of the test fleet by more than 20 percent or one vehicle, whichever is greater.