an area of a city that vehicles that produce more than a low level of harmful emissions (= waste gases) must pay to enter

There are plans to tackle local air pollution hotspots, through traffic management schemes and low emission zones. 有计划通过交通管理方案和低排放区来解决当地空气重污染点。

Other changes to affect goods vehicles include the Low Emission Zone around London. 其他影响货运车辆的变化包括伦敦周围的低排放区。