portuguese national inventory report on greenhouse gases, 1990

Energy3.3.3.2.2.1 Vehicle FleetA function for vehicle abatement based on vehicle age was applied to vehicle sales in order todetermine the active fleet per year. This function derives from Associação Automóvel dePortugal (ACAP) data and is valid for passenger cars, light duty vehicles and motorcycles and issummarized in the following couple equations:TT Sc,a,f , y1 c,y2 Sc,a,f , y1 c,y2 1 10.0477 e1005.2721 A0.6003Ay1y 2 100y1y2 ;A 10 35.199 ;10A 20Where,T(c,a,y1) = number of vehicles of class c, with age a, using fuel f in year y1;S(c,y2) = sales of vehicles of class c, using fuel f in year y2;A(c,y1-y2) = age of vehicles of class c, using fuel f in year y1.The number of mopeds was obtained from the insurance institute as information on mopedssales and abatements is not available.National statistics institute provides information on the total activity level for heavy duty trucks,Buses and Coaches. The activity level is then disagregated by technology using the informationfrom vehicle inspection centers.3.3.3.2.2.2 Distance TravelledDistance driven was established using a model based on data from vehicle inspection centers.Distance travelled by heavy duty vehicles, buses and coaches was established from <strong>national</strong>statistics. Disaggregation by vehicle technology was then obtained using the data from thevehicle inspection centres.Mopeds and motorcycles are excluded from the vehicle maintenance program therefore it wasassumed an average mileage of 12000 km/year for motorcycles (Bennetts, 2009) and 5000 formopeds.Portuguese National Inventory Report 2013MAMAOT3-120