The proposed rule, aiming to transition 50 percent of vocational vehicles, 35 percent of new short-haul regional tractors, and 25 percent of new long-haul trucks to zero emissions by 2032, called for over 40 percent of all heavy-duty trucks to be emissions-free.

Under the finalized rule, approximately 30 percent of heavy-heavy-duty vocational trucks and 40 percent of regional day cabs are mandated to be zero-emission by 2032. //

That leads to the problem of charging infrastructure. The establishment of a comprehensive and widely accessible charging infrastructure tailored to the unique needs of EV trucks will require an entirely new network distinct from existing trucking options and from those of passenger vehicles. //

A report by the Clean Freight Coalition (CFC) highlights the monumental challenge of electrifying the U.S. commercial truck fleet, estimating nearly $1 trillion in infrastructure investment alone. This investment includes over $620 billion from the trucking industry for chargers, site infrastructure, and electric service upgrades. However, the trillion-dollar figure does not encompass the cost of new battery-electric trucks, which can be two to three times more expensive than diesel counterparts.