1,742 research outputs found

    Roads policing: Current context and imminent dangers

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    © The Authors 2008. Published by Oxford University Press on behalf of CSF Associates: Publius, Inc. All rights reserved. For permissions please e-mail: [email protected]. The final version of this paper can be accessed at the link below.This paper will argue that roads policing is the public face of the police for many citizens and thus enjoys an elevated profile. Yet the delivery of roads policing services requires urgent care and attention. As was the situation a century ago, potential and actual conflict with the driving public could be close at hand as more reliance is placed on enforcement technology and more drivers become criminalised and their vehicle movements logged. Indeed, it will be contended that unless great care is taken, such could be the public disaffection with traffic law enforcement and monitoring policies that the legitimacy of the police itself could be challenged. After a brief update of recent developments concerning roads policing nationally and internationally, the second section will underline the ways in which roads policing provides a crucial service. Details follow of dangers lying in wait for the service if the pressing enforcement issues around roads policing are allowed to drift. Finally, some suggestions are outlined to help inform discussion of these matters that could simultaneously facilitate achievement of other key roads policing objectives

    "Not the Usual Suspects": A Study of Factors Reducing the Effectiveness of CCTV

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    Previous research on the effectiveness of Closed Circuit Television (CCTV) has focused on critically assessing police and government claims that CCTV is effective in reducing crime. This paper presents a field study that investigates the relationship between CCTV system design and the performance of operator tasks. We carried out structured observations and interviews with 13 managers and 38 operators at 13 CCTV control rooms. A number of failures were identified, including the poor configuration of technology, poor quality video recordings, and a lack of system integration. Stakeholder communication was poor, and there were too many cameras and too few operators. These failures have been previously identified by researchers; however, no design improvements have been made to control rooms in the last decade. We identify a number of measures to improve operator performance, and contribute a set of recommendations for security managers and practitioners. Security Journal (2010) 23, 134-154. doi:10.1057/sj.2008.2; published online 6 October 200

    An instinct for detection: psychological perspectives on CCTV surveillance

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    The aim of this article is to inform and stimulate a proactive, multidisciplinary approach to research and development in surveillance-based detective work. In this article we review some of the key psychological issues and phenomena that practitioners should be aware of. We look at how human performance can be explained with reference to our biological and evolutionary legacy. We show how critical viewing conditions can be in determining whether observers detect or overlook criminal activity in video material. We examine situations where performance can be surprisingly poor, and cover situations where, even once confronted with evidence of these detection deficits, observers still underestimate their susceptibility to them. Finally we explain why the emergence of these relatively recent research themes presents an opportunity for police and law enforcement agencies to set a new, multidisciplinary research agenda focused on relevant and pressing issues of national and international importance

    Transportation, Terrorism and Crime: Deterrence, Disruption and Resilience

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    Abstract: Terrorists likely have adopted vehicle ramming as a tactic because it can be carried out by an individual (or “lone wolf terrorist”), and because the skills required are minimal (e.g. the ability to drive a car and determine locations for creating maximum carnage). Studies of terrorist activities against transportation assets have been conducted to help law enforcement agencies prepare their communities, create mitigation measures, conduct effective surveillance and respond quickly to attacks. This study reviews current research on terrorist tactics against transportation assets, with an emphasis on vehicle ramming attacks. It evaluates some of the current attack strategies, and the possible mitigation or response tactics that may be effective in deterring attacks or saving lives in the event of an attack. It includes case studies that can be used as educational tools for understanding terrorist methodologies, as well as ordinary emergencies that might become a terrorist’s blueprint

    Effective design, configuration, and use of digital CCTV

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    It is estimated that there are five million CCTV cameras in use today. CCTV is used by a wide range of organisations and for an increasing number of purposes. Despite this, there has been little research to establish whether these systems are fit for purpose. This thesis takes a socio-technical approach to determine whether CCTV is effective, and if not, how it could be made more effective. Humancomputer interaction (HCI) knowledge and methods have been applied to improve this understanding and what is needed to make CCTV effective; this was achieved in an extensive field study and two experiments. In Study 1, contextual inquiry was used to identify the security goals, tasks, technology and factors which affected operator performance and the causes at 14 security control rooms. The findings revealed a number of factors which interfered with task performance, such as: poor camera positioning, ineffective workstation setups, difficulty in locating scenes, and the use of low-quality CCTV recordings. The impact of different levels of video quality on identification and detection performance was assessed in two experiments using a task-focused methodology. In Study 2, 80 participants identified 64 face images taken from four spatially compressed video conditions (32, 52, 72, and 92 Kbps). At a bit rate quality of 52 Kbps (MPEG-4), the number of faces correctly identified reached significance. In Study 3, 80 participants each detected 32 events from four frame rate CCTV video conditions (1, 5, 8, and 12 fps). Below 8 frames per second, correct detections and task confidence ratings decreased significantly. These field and empirical research findings are presented in a framework using a typical CCTV deployment scenario, which has been validated through an expert review. The contributions and limitations of this thesis are reviewed, and suggestions for how the framework should be further developed are provided

    Anti- Forensics: The Tampering of Media

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    In the context of forensic investigations, the traditional understanding of evidence is changing where nowadays most prosecutors, lawyers and judges heavily rely on multimedia signs. This modern shift has allowed the law enforcement to better reconstruct the crime scenes or reveal the truth of any critical event.In this paper we shed the light on the role of video, audio and photos as forensic evidences presenting the possibility of their tampering by various easy-to-use, available anti-forensics softwares. We proved that along with the forensic analysis, digital processing, enhancement and authentication via forgery detection algorithms to testify the integrity of the content and the respective source of each, differentiating between an original and altered evidence is now feasible. These operations assist the court to attain higher degree of intelligibility of the multimedia data handled and assert the information retrieved from each that support the success of the investigation process

    Evaluating the use of CCTV surveillance systems for crime control and prevention : selected case studies from Johannesburg and Tshwane, Gauteng

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    This research evaluates crime prevention effects/impact of open-street closed circuit television (CCTV) surveillance systems as installed in the selected areas (research sites) of the cities of Johannesburg and Tshwane in the Gauteng Province of South Africa on crimes occurring in these surveilled areas. Currently, CCTV surveillance systems are a common sight in many of the urban areas of South Africa.The principal aim of this study was to explore the evaluation of CCTV for crime prevention, reduction and control. The results show that, despite a lack of empirical evidence as to the value of CCTV surveillance systems in preventing or reducing crime, there is strong public support for these systems and that the foundation for much of this support lies in the perceptions/feelings of members of the public of greater safety generated in areas with CCTV coverage. The method of sampling used was a purposive non-probability sampling approach. Participants were selected for interviews based on their knowledge and experience of CCTV systems. The results show that, despite this lack of empirical evidence, CCTV appears to be a viable option for crime prevention and control when integrated with evidence-based strategies rather than as a stand-alone tactic in order to achieve crime control benefits.Criminology and Security ScienceM. Tech. (Security Management

    Can CCTV reliably detect gun crime?

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    In recent years the highest levels of gun crime in England and Wales have been recorded. Gun crime is known to occur in environments that fall under the view of the networks of CCTV cameras which are endemic in urban Britain. Consequently, CCTV has the potential to detect gun crime. However, CCTV operators face a near impossible task: often, each individual operator is required to monitor multiple cameras for extended time periods. It is not surprising then to find that CCTV has had little effect at reducing gun crime. A new collaborative research programme (MEDUSA) is underway across the UK which will develop a software application to aid CCTV operators detect the precursors of gun crime. MEDUSA aims automatically to detect both guns as objects (concealed or otherwise) and people who intend to commit gun crime, via CCTV. The system is partly based on eliciting the features that skilled CCTV operators identify as indicative of a concealed weapon or suspicious behaviour related to gun crime. Initial studies into the examination of these skills across several CCTV centres indicate that there was little formal instruction in the detection of mal-intent. Much skill is built up from prolonged experience in examining CCTV imagery. Thus, potentially, there is widespread individualisation of detection skills. Further, visual cues specific to gun crime were limited. However, the present methodology relied upon direct report. It is argued that a range of both consciously and subconsciously detected cues could facilitate gun detection via CCTV. Future studies will examine this possibility

    Women\u27s perceptions of safety : CCTV in an inner city setting

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    To date, most research on closed circuit television (CCTV) has come out of the United Kingdom (UK) where the growth of CCTV has reached immense proportions with wide support and funding from the Home Office. There are 33 systems operating in Australia, with the focus of this research on the first system installed in Perth, Western Australia in 1991. There is a dearth of information on CCTV in Australia, and little research looking at the link between CCTV, women’s safety and fear of crime. The literature on fear of crime shows that women are more fearful than men even though they are less likely to be offended against. Many reasons are proposed in the literature including vulnerability, victimisation and past experience of crime, environmental factors, and psychological factors to explain women’s fear. Many methodological problems are presented in the fear of crime literature. The core aim of this research was to collect information attitudes, knowledge and opinions about closed circuit television (CCTV) and women’s safety. Six qualitative interviews were conducted with women who work in the fields related to CCTV and women’s safety or who have a keen interest in the field. A further 295 women in the community were surveyed about issues relating to the purpose and effectiveness of CCTV, attitudes about CCTV and general feelings towards crime and safety. The findings show that women are overwhelmingly supportive of CCTV in public spaces and believe CCTV reduces crime and increases feelings of safety. However, women consider the current level of surveillance to be sufficient, and would like to see more police officers, women police and improved street lighting. Women are fearful for their safety at night and are afraid of personal crimes more than property crimes. Women are fearful at the railway station, when they are alone, in car parks and walkways and when waiting for taxis. Older women are more supportive of CCTV than younger women and all women would like to be made more aware the CCTV system
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