Värdering av personbilstrafikens utsläpp utifrån en simultan målanalys

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Henrik Edwards

In this report a method for determination of implicit values/shadow prices for exhaust emissions from cars is described. The objective is to formulate a policy with the aim of attaining existing environmental targets concerning carbon dioxide and regulated emissions (hydrocarbons, carbon monoxide, nitrogen oxides and particles). Exhaust emissions from different vehicle categories with their properties are added together. To attain a target concerning one type of emission in the model, the vehicle category having the lowest specific emission level is chosen. When several targets must be simultaneously attained, it is necessary to take into consideration many factors in deciding on suitable measures which provide the desired vehicle mix and vehicle usage.

The described method consists of an optimisation model for maximisation of the change in consumer surplus (with variants), subject to the satisfaction of formulated, future environmental targets. The variables influencing the choice of vehicle category and usage are fuel prices and yearly vehicle tax. A behaviour model for the choice between petrol and diesel cars is included in the optimisation model. Emission and vehicle mileage data are collected from the VTI databases for the emission models EM94 and EMV.

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