The article discusses the processes of self-justification in drivers. People are often not prepared to give up car use, which makes a change in cognition more likely than a change in behavior. When self-justification processes occur, it is important to find out how policy measures can be adjusted so that the likelihood of success increases. When behavior is easier to change, one can expect less self-justification. Self-justification processes point out the significance of a receiver-oriented policy. Processes of self-justification show that people do not always react to measures in the way that policy-makers would like them to.