Car travel baselines
These baselines are based on data available in NTMCalc 4.0, literature reviews and expert interviews. The settings aim to reflect on general road traffic by car. In general we recommend use of real data if available at sufficient quality. NTM default data are conservatively assessed and should if used thereby not enable low emission calculations. Furthermore they should promote actual used cars real data in relation to NTM default data, hence being used in the choice of cars.
Clarifications and abbreviations
Describes propulsion by petrol or dieseltype and their gross weight
Describes type of fuel used. E5 refers to 5% Ethanol. B5 refers to 5% biodiesel
Includes a mix of motorway, highway and rural roads.
Refers to engine volume
Refers to emission standard
Describe road topography as this has an influence on fuel consumption
Relates to the average number people in the car. Assumptions are that commuting to work is 1.13, daily family trips is 1.31 and leisure trips are 1.7 .
Is used to artificially design an average car based on weigthed average of all options.
Use of energy, including fuel production/ distribution and the combustion (wtw). Only combustion is ttw.
Emissions of carbon dioxide equivalents including fuel production, distribution and the combustion (wtw).
Emissions of fossil carbon dioxide in the combustion phase (ttw).
NTMCalc 4.0; www.transportmeasures.org
Handbook for emission factors www.hbefa.net