| Overview : The aim of this assignment is to introduce a system to measure pollutant emissions from on-road medium and heavy trucks based on actual observations of emissions in Cairo under real traffic conditions. Accordingly, emission factors and the relevant emissions modeling for estimating emissions of greenhouse gases and other primary air pollutants from medium and heavy trucks are to be developed. The measurements shall be conducted using portable "onboard" measurements equipment for representative samples of vehicle categories and routs representing driving conditions in Greater Cairo. The assignment involves several stages, including but not limited to the following: - Representative sampling of the trucks (for their age and capacity in particular) and traffic conditions to be investigated; - Measurements of their fuel consumption; - Measurements of pollutants under actual traffic conditions using portable "onboard" measurement instruments - Analysis of measurements and emissions modeling against reference parameters; - Simplified, aggregated modeling to obtain an annual assessment of CO2 and other pollutant emissions from trucks, based on reference variables. Studies will be applied only to medium and heavy trucks as classified in US standards. | 
