The Medium- and Heavy-Duty (MDHD) Zero-Emission Vehicles (ZEV) Blueprint focuses on MDHD ZEV adoption for small- and medium-sized, ensuring none are left behind. Successful MDHD ZEV adoption is a specific focus of the City’s ambitious Climate Action Plan goal of net-zero emissions in San Francisco by 2040, and the California Air Resources Board’s statewide goal of 100% zero-emission MDHD on-road vehicles by 2045 where feasible.