External costs of traffic in the field of nature and landscapes (main study) (348.2)
Overview
Background & policy context:
The relevant causal chains between the traffic and the nature and the landscape have been identified in the preliminary study I. The preliminary study II investigated whether it is possible to determine the mixed structure of the external nature and landscape effects by comparison of the aerial photographs from the '50s with the aerial photographs from the 90s. This pre-test defined the exact scope, the methodology and the approach for main study.
Objectives:
The analysis of the aerial photographs will produce a quantitative respectively monetary information on habitat, habitat quality and loss of habitat fragmentation since the 50s. The results will be representative of the whole of Switzerland. The resulting costs have to be divided between the two modes of transport road / rail and within this on the passenger and freight transport. Alternative assessment procedures and possible internalisation shall be identified, if necessary.
Methodology:
This pre-test defined the exact scope, the methodology and the approach for main study findings. There is still a degree of uncertainty by the particular number of evaluated aerial images. The project will evaluate 300 of aerial images.
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