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Energy use and emissions per transport mode

Energiegebruik en emissies per vervoerwijze


The aim of the study reported was to establish a basis for a realistic comparison of energy- efficiency to emissions from the different passenger and freight transport modes. Besides this report will also focus on of a modal shift on the effects on energy use and emissions. The energy use and emissions applied in the calculations arose from the production of fuels and electricity and yielded the following main conclusions: (1) Passenger transport by electric trains shows the lowest emission factors in 1995 compared to the other passenger transport modes. The city bus shows slightly higher energy efficiency than the passenger car used for city trips. The emissions of NOx and particles from the city bus are three times as high as those from the passenger car. The touring bus has the highest energy efficiency, followed by electric rail transport. (2) As mentioned above, a comparison of energy use with emissions per passenger kilometre using different passenger transport modes does not say anything about the effect on energy use and emissions of a modal shift from passenger cars towards public transport. Every increase in city-bus use at the cost of passenger-car use leads, at the current occupation rates, to avoiding an emission and energy use as large as the emission and energy use of one passenger car. (3) As a result of a further tightening of emission standards for road traffic combined with the delay of emission standards for diesel passenger trains, the environmental lead of electric passenger transport is declining. (4) With the current differences in type of transported goods, freight transport by road vehicles is 2 to 2.5 times less energy efficient than inland shipping or rail transport. However, the same can be concluded where transport of similar goods (containers) by the different modes is concerned. The emissions from electric rail transport are much lower than those from inland shipping or road transport. (5) In view of the coming tightening of the emission standards for road vehicles, combined with the delay of emission standards for freight trains (with diesel engines) and inland ships, there will be a much smaller gap between road and rail-freight transport in 2010.

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