National-level policy outcomes produced by European Union–level directives and regulations are much more diverse across member states than one might expect. This is especially true for those undramatic but complex policy areas that lack the salience of high-level negotiations and treaty signings. Adrienne Héritier and her five coauthors investigate the phenomenon of differential national responses to European policymaking in two transportation policy subareas across five states. They focus on the deregulation of road haulage (trucking) and the reform of publicly owned railways in the UK, France, Germany, the Netherlands, and Italy. This allows them to show just how widely national policy outcomes can vary and still be generally in line with European Union (EU) requirements.