International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

The use of video surveillance systems (Closed-Circuit Television – CCTV) has become widespread across various modern applications. In the context of forensic documentation submitted for expert analysis, digital video recordings of traffic collisions are increasingly common. These recordings often capture not only the moment of impact but also crucial pre- and post-collision events. Such footage provides valuable data for understanding the dynamics of an incident and conducting detailed kinematic analyses. Accident reconstruction software, such as AnalyzerPro and PC Crash, includes specialized video analysis modules. When certain conditions are met, these modules can be used to extract quantitative information about the position and velocity of involved vehicles or individuals at specific moments in time. This paper provides an overview of the operational principles of these modules, the prerequisites for their effective use, and the precision with which they estimate kinematic parameters, as demonstrated in a case study.

The use of video cameras for automatic traffic management, as well as video surveillance cameras, has made it possible to visually observe traffic accidents, i.e. the manner and movement of the parties involved in the accident at the moment and immediately before it occurred. On the basis of a video of a vehicle passing through a section that can be photogrammetrically rectified and transformed into an orthogonal view, with knowledge of the dimensions of characteristic formations that are usually rectangular in shape, such as pedestrian crossings, etc., and with knowledge of the frequency of the video recordings, it is possible, using appropriate software, to determine the speed of the object under study. In this paper, the reliability of the speeds determined by rectification using the AnalyzerPro software has been compared with the target speeds of the vehicle defined by the speed limiter, measured by a handheld radar and a GPS device installed in the vehicle.