WASHINGTON, D.C. – The U.S. Environmental Protection Agency (EPA) has finalized minor amendments to new rules for diesel engines in passenger cars and light trucks. The rules make it easier for manufacturers to comply with tougher emission standards during a transition period, according to Waste News. On Mar. 21, EPA Administrator Stephen Johnson signed two voluntary compliance options that would apply to nitrogen oxide requirements for diesels during compliance testing at high altitudes and high speed and acceleration conditions. Also, the voluntary options would remain in place for only three model years — 2007 through 2009, according to the report. However, manufacturers exercising the options would need to meet more stringent requirements in other aspects of the Tier 2 Vehicle and Gasoline Sulfur emissions program. For additional details, visit www.epa.gov/tier2/amendments.htm.

Originally posted on Fleet Financials