Trams under the microscope

Brno public transport has a precise overview of accidents on its tramlines

“Though the installation of cameras does not have an absolute influence on accident rates, what is important is that thanks to accessories such as the camera system, even these can be quickly investigated. An incident in 2017 demonstrated how the installation of cameras can be helpful in this regard. The Axis camera came to the rescue of a driver in court, when a recording helped to prove that a child pedestrian caused a collision with a tram himself, after carelessly running into a tram as he tried not to miss his connection.” Ing. Zdeněk Jarolín, head of technical department, Brno Public Transportation Authority.


The Brno Public Transport Authority was in need of an accident recording camera system for its trams. Cameras would provide a quality picture under any conditions and a reliable local record. The images should clearly show both the area immediately in front of the vehicle, and the surrounding traffic situation including road signs, traffic lights and the status of points in the direction of travel.


Given the specified requirements, it was clear that the aim was a camera which, thanks to its minimal dimensions, would be handily positionable in the driver’s cab of any type of operated vehicle and, at the same time, would also provide the required wide angle view and high definition. AXIS F1005-E Sensor Unit would become the foundation, and AXIS F41 the main unit. The camera provides a video stream of up to 25 frames per second in full HD so that, in ideal conditions, even the registration plates of cars are legible while maintaining the continuity of movement at the given length of recording. Recordings are stored on an SD card in a recording unit so that, if an incident occurs, they can be immediately viewed by employees authorised to investigate such an incident. Recordings are stored in a time loop and are automatically overwritten. Accident recording cameras have been installed in various types of trams, e.g., the 13T6, Anitra, Vario LF and KT8D5N. In total, around 50 vehicles have been equipped.


The installation of cameras has undoubtedly enhanced the quality of transport, since even drivers have come to realise that the cameras will record their driving performance. It is in part thanks to this that DPMB can observe a yearly decline in traffic accidents. The work of investigators and employees of the transport authority has also been considerably simplified by the implementation of the camera system. The process of potential administrative proceedings has also been speeded up. At the same time, the integrator is considering developing new analytical tools and warning systems.

Related links

AXIS F41 Main Unit