Criminal Reduction Utilising Statistical History is an IBMpredictive analytics system that attempts to predict the location of future crimes. It was developed as part of the Blue CRUSH program in conjunction with Memphis Police Department and the University of Memphis Criminology and Research department. In Memphis it was “credited as a key factor behind a 31 per cent fall in crime and 15 per cent drop in violent crime.”
As of July 2010[update], it was being trialed by two British police forces.
In 2014 a modified version of the system, called CRASH (Crash Reduction Analysing Statistical History) became operational in Tennessee aimed at preventing vehicle accidents.