Die Wettbewerbsintensität des Schienenpersonenfernverkehrs (SPFV) hat sich in Deutschland seit der Bahnreform im Vergleich zum Schienenpersonennahverkehr (SPNV) und Schienengüterverkehr (SGV) nur sehr zurückhaltend entwickelt. Die Deutsche Bahn AG ist mit 99 % Marktanteil im SPFV noch immer...

In this paper, we emphasize that choice sets generated by a search process have two properties: first, they are limited; second, they are endogenous to preferences. Both factors lead to biased estimates in a static demand framework that takes choice sets as given. To correct for this bias, we...

Recently, police departments, legislators, media, and the public at large in the U.S. have increasingly been concerned about racial disparities in officers' issuing traffic tickets. Ascertaining the extent to which an observed disparity reflects racial bias is the crucial issue. First, we use a...