Transportation sector CO₂ emissions change in the U.S. 1990-2023

Transportation sector emissions in the United States increased by 0.8 percent in 2023 from the previous year. The largest annual reduction in transportation emissions since 1990 was observed in 2020. The outbreak of COVID-19 and the subsequent restrictions on travel caused emissions from this sector to plummet more than 15 percent year-over-year. The easing of restrictions and the return to normal transportation activities saw emissions rebound sharply in 2021.

美国交通运输领域在2023年的排放量相较于上一年增长了0.8%。自1990年以来，2020年见证了交通运输领域年度排放量最大幅度的减少。COVID-19疫情的爆发及其随之而来的旅行限制导致该领域的排放量同比下降超过15%。随着限制措施的放宽以及交通运输活动的回归常态，2021年排放量急剧反弹。