Those of us with heavy-duty sanitation, parks, or other municipal fleet, or managing public transit fleets may be interested to hear that Phase II of the federal heavy-duty vehicle fuel efficiency standards has been proposed by US DOT and US EPA, and is expected to be adopted this summer. Read more on this and take a look at some helpful graphics at ACEEE’s website, or take a look at the proposed rule in the Federal Register, here. Per ACEEE, the Phase 2 standards would reduce fuel consumption by new heavy-duty vehicles an additional 24%.