Last amended:2017Year:2026Length:46 wordsSubsections:1Official source
Cite as 40 C.F.R. § 86.530-78 (2026)
(a) Ambient temperature levels encountered by the test vehicle throughout the test sequence shall not be less than 20 °C (68 °F) nor more than 30 °C (86 °F). The vehicle shall be approximately level during the emission test to prevent abnormal fuel distribution. (b) [Reserved]