To summarize, routine activities theory is a theory of crime events, which distinguishes it from a majority of criminological theories that focus on explaining why some people commit crimes. Although routine activities theory was initially used to explain changes in crime trends over time, it has been increasingly used much more broadly to understand and prevent crime problems. Routine activities theory has guided research designed to understand a range of phenomena, including crime trends over time, distributions of crime across space, and individual differences in victimization. It also has been used in conjunction with many crime control strategies, including problem-oriented policing and problem analysis. Despite the broad applicability of the theory to date, there are numerous directions for future research. Examples include further research on the controllers of crime as well as the super controllers.