However, if the health-related air quality objectives are to be met, light duty diesel vehicles such as taxis, and public light buses, will have to switch to cleaner fuels such as liquefied petroleum gas (LPG).

• 不过，要达至符合健康的空气质素指标，轻型柴油车辆如的士和公共小型巴士，必须改用污染量较低的燃料，例如石油气。