Ecology Despite federal action, WA continues moving forward on clean trucks
The Washington Department of Ecology has adopted new vehicle emission standards to promote zero-emission semi-trucks and heavy-duty vehicles. The state pauses enforcement of these rules amid ongoing federal litigation challenging them. Transportation remains the largest source of carbon pollution in Washington, with heavy-duty vehicles contributing significantly to diesel emissions, which cause serious health issues. Ecology Director Casey Sixkiller emphasized the state's commitment to public health and clean transportation, stating that keeping clean truck rules current will help manufacturers. Washington plans to invest nearly $160 million from the Climate Commitment Act to assist companies in adopting zero-emission vehicles and charging infrastructure.
The updated rule lowers sales requirements for semi-trucks to encourage adoption. An additional $26. 3 million will fund an electric charging and hydrogen refueling corridor for commercial vehicles along the West Coast. Ecology has extended the enforcement pause for these emission standards through June 2026 and will continue updating regulations.