Telraam V1 was Telraam's first concept sensor, and it started a traffic-counting revolution which has now been taken to the next level thanks to our purpose-built Telraam S2 device.
While we believe that the Telraam S2 offers better accuracy, precision, and an improved user experience for citizen science, we will keep supporting Telraam V1 devices over the coming years.
During the summer of 2018 a mix of transport engineers, data scientists, and developers sat together at TML to come up with a method that could provide traffic data on a previously unprecedented local scale, operating continuously for a fraction of the cost of existing traffic monitoring systems.
The experience of the team led them to focus on building something small, simple and affordable, but still fit for purpose. The final device would need be able to live in citizens’ windows, so that it would represent their actual ‘view’ of the street, but without being intrusive. This way it could be deployed in large numbers to get a complete picture of a wide range of streets, including minor and residential ones, not often covered by traditional counting setups.
The prototype was built using off-the shelf components such as a miniature Raspberry Pi computer and a camera that met the above criteria, but the detection algorithm was developed in house. The development of the sensor was finished before the end of the summer, then a basic back-end and front-end were built from scratch, with the initial batch of 50 devices being distributed in Leuven during early 2019. By the time the Telraam S2 was launched in 2023, more than 5000 Telraam V1 devices had been sold around the world.Because most of our users just want to count traffic and aren't necessarily technically skilled to work with Raspberry Pi's, we only sell the Telraam S2 since its release in spring 2023. However, we know that there are plenty of techies out there who would love to get started, and for them the Raspberry Pi based V1 sensors is still a great tool to play with. That is why we are not only still supporting the old V1 sensors in the field, but also installations of new self-built Telraam V1 devices. If you want to count traffic and you’re not scared of a Raspberry Pi project, read on!
For more information on the technical requirements, object classification, accuracy and potential limitations, data calibration, and questions regarding the speed data, please visit our FAQ.