This paper analyzes "attribute-based regulations," in which regulatory compliance depends upon some secondary attribute that is not the intended target of the regulation. For example, in many countries fuel-economy standards mandate that vehicles have a certain fuel economy, but heavier or...

Firms sometimes comply with externality-correcting policies by gaming the measure that determines policy. We show theoretically that such gaming can benefit consumers, even when it induces them to make mistakes, because gaming leads to lower prices by reducing costs. We use our insights to...

What is a feasible and efficient policy to regulate air pollution from vehicles? A Pigouvian tax is technologically infeasible. Most countries instead rely on exhaust standards that limit air pollution emissions per mile for new vehicles. We assess the effectiveness and efficiency of these...