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Based on data from eight Polish cities, we tested if closed-circuit television (CCTV) monitoring systems are effective in crime reduction and if the CCTV monitoring effects are durable. In a quasi-experimental method, we applied police data about four types of crime incidents in 2005–2014 as well as camera location. A preventive effect appeared in 10 of 17 of analysed paired treatment/comparison areas. The overall mean effect appears modest. In two of four cases, the preventive effects were durable. The analysis proves that CCTV cameras in the Polish cities had a crime reduction effect and the effect is sensitive for the category of crime. The influence of CCTV on the fall in crime in Poland is unlikely.

Effectiveness of CCTV systems as a crime preventive tool: evidence from eight Polish cities