主要職責包括–(a)就車輛廢氣排放模擬方法提供改善方案／建議；(b)研發對誤差估算、質量保證等的分析方法；(c)對測量所得的車輛廢氣排放數據及調查所得的數據進行統計分析；(d)協助設計車輛廢氣排放數據庫及數據處理程序；(e)協助編制車輛廢氣排放清單及評估減排措施；(f)協助／監督改良車輛廢氣排放模擬系統的工作；以及(g)有需要時執行由督導人員指派的其他技術性／行政職務。

（註：工作時間及地點須視乎部門的運作需要而定。獲錄用者或需(a)不定時及超時工作，包括晚上及周末和周日；及(b)不時在戶外工作。）

The main duties include – (a) providing improvements/recommendations on the vehicle emission modeling methodology; (b) developing analyzing methodologies like error estimation, quality assurance; (c) conducting statistical analysis on vehicle emission measurement and survey data; (d) assisting in the design of emission database and data manipulation procedures; (e) assisting in compiling vehicle emission inventory and evaluating emission reduction initiatives, (f) assisting/overseeing the upgrade of vehicle emission models; and (g) performing other technical/administrative duties as assigned by the supervisors when required.

(Note: The hours and venues of work may be varied having regard to the operational needs of the department. The successful candidate may be required to (a) work irregular hours and overtime, including evenings and weekends; and (b) work occasionally outdoors.)