We establish nonparametric identification in a class of so-called index models using a novel approach that relies on general topological results. Our proof strategy imposes very weak smoothness conditions on the functions to be identified and does not require any large support conditions on the...

This paper reiterates the basic principles and rationale for valuing travel time savings. It explains the type of impacts that the valuation of travel time savings intends to capture and discusses whether and how those fundamental principles continue to hold with automation and increased...