Andersson, Henrik - Transportekonomi, Väg- och Transportforskninginstitut (VTI) - 2007
. This study describes a validity test on the basis of theoretical predictions and empirical findings for private and public … safety measures. According to the test, public willingness to pay (WTP) should exceed private WTP. … are often used. SP methods are based on hypothetical market settings which necessitates validity tests of the results …