On the Uncertainty in the Economic Valuation of Carbon Emissions from Transport

This paper discusses the economic valuation of the impacts on climate change from transport. Different studies have dealt with this topic (technical assessments, guidelines and aggregate models). They show a large interval, which is mostly caused by the numerous uncertainties categorised according to whether they are of a technical, economic or decisional nature. As long as the value of GHG emissions is not differentiated between sectors, a fair carbon evaluation for transport cannot be provided. To this aim, a mesoscopic approach to set the policy implications and the targets achievable by the transport sector can be a valid solution.