The revised EU CO2 standards for heavy-duty vehicles, published on June 6, 2024, and implemented from July 1, 2024, aim to significantly reduce emissions from trucks, buses, and trailers. The regulation sets ambitious targets, including a 45% CO2 reduction for large trucks and buses by 2030, 65% by 2035, and 90% by 2040 compared to 2019 levels, while also mandating that new city buses become zero-emission by 2035.