Abstract
ALPR systems have been rapidly spreading in the US. However, little is known about their effectiveness. Results of an interrupted time series model suggest that ALPR systems significantly increased follow-up arrests in the Cincinnati Police Department (CPD) compared with traditional policing approaches. Human resources cost analysis of the study showed that ALPR technology carried out more follow-up arrests by using fewer police officers compared with traditional policing. Finally, cost-effective analysis revealed that ALPR technology is cost-effective and amortises itself within less than one week for property crimes, and less than a month for violent crimes.
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