The vehicle engines burn the fuel and change the fuel’s chemical energy into movement. Since the burning process of fossil fuels is not perfect, the exhaust gas is composed of many harmful substances. The composition of the combustion products depend on the fuel, engine type, that is, the EURO-class, vehicle type and on the driving velocity.
The emission calculation method is based on the method presented by EEA/EMEP guidebook
(https://www.eea.europa.eu/publications/emep-eea-guidebook-2016).
STEP 1
Emission parameters from EEA/EMEP Filter out the emission coefficients for each car type
STEP 2
Combine the EEA/EMEP emission parameters with the EURO class distribution оf each car type - One EURO- class distribution for hole country
STEP 3
Combine the emission factors with the vehicle type distribution. - vehicle type disstribution (PC, HDV, LCV, Bus) and traffic volume varies in each road segment
Emission
factors
g/km/day
or g/km/year
STEP 4
Combine the emission factors g/km with length od the road segment
Emission g/day or t/year
The traffic flow (http://egreenintertraffic.ru/meteo/air-quality-model/traffi-volume/) and the number of Heavy duty vehicles (http://en.greenintertraffic.ru/meteo/air-quality-model/hdv/) are used as a input data for emission calculation.
See full description of the emission calculation method:
Lähdeaho, O., Hilmola, O.-P., Laukkanen, E., Rasila, T., Salmi, J., Wemberg, A., Hannuniemi, H., Komppula, B., Kauhaniemi, M., Kangas, L., Lovén, K., Pietarila, H., Vorontsova, S., Vorontsov, A., Karelina, L., Pavlov, V., 2019. The manual of the estimating Greenhouse gas and other air emissions of the Road Traffic
http://en.greenintertraffic.ru/greenintertraffic/materials/documents-of-the-project.html
RU