The aim of this study, based on literature and statistics, has been to review the energy consumption and emission of air impurities on internal domestic traffic in Finland, and to compare the energy consumptions and emissions based on transportation unit. The other aim of the research has been to estimate the future development of Finnish internal traffic from the point of view of environmental protection and sustainable development. The different traffic systems reviewed are road traffic, railway traffic, domestic waterborne traffic (excluding boating), domestic air traffic and briefly also the agricultural and forestry related traffic (farm tractors, harvesters and near transportation of forestry). Compared with other ways of traffic, the road traffic has a superior position whether it is compared with others ways of traffic based on person or goods transport, energy consumption or emissions. The increase of the road traffic has also been rapid during the last few years.