A truck travels along Interstate 80 in Berkeley, California. Photographer: Justin Sullivan/Getty Images
The US Environmental Protection Agency on Thursday proposed rolling back emission standards for new heavy-duty trucks, including buses, garbage trucks and semis.
Under the proposal, EPA is looking to scale back warranty requirements for trucks and delay implementation of updated useful life extensions. If finalized, this action could result in lower costs for truck manufacturers while potentially also boosting air pollution.
美国环境保护署于周四提议放宽针对新型重型车辆的排放标准，涉及范围包括公交车、垃圾车及半挂卡车等车型。
根据该提案，美国环保署（EPA）计划缩减对卡车的保修要求，并推迟更新使用寿命延长规定的实施。若最终敲定，此举或可降低卡车制造商的成本，但同时也可能加剧空气污染。
