Closed-circuit TV surveillance evaluation : Closed-circuit television surveillance evaluation

Significance of results: The results presented and discussed in this report indicate that, after the implementation of the CCTV camera systems, the level of crime decreased in three out of the five areas analyzed, and remained largely unchanged in the remaining two. [...] While unknown, the imprecision arising from the use of standard locations for incidents, instead of measured locations for each incident, is unlikely to exceed the discrepancies found between the two systems of measurement - the eastings and northings recorded for the incidents and the angular references of the GPS reading for the camera locations. [...] This was not the case with the current project, and because of significant limitations in control area selection, the author decided to compare any effects on crime that the implementation of CCTV systems might have had in the target areas with the crime records for the whole city, as the level of crime in the city seems to have been fairly constant over the period of time for which records exist [...] The approach used in this work is consistent with best practices in the field, as discussed in Section 2. DRDC CSS TR 2010-09 13 In order to assess the impact of CCTV system implementation, the author has looked at levels of crime in the selected areas during the implementation period and during the same time period in each of the years with records prior to the implementation. [...] The calculated RES values indicate virtually the same effect on crime in the buffer compared with the target area, a decrease in crime in the control area compared with the target area, and similar trends in the target area compared to citywide data.