Due to an increasing number of vehicles on roadways, better traffic management and planning have become imperative. Our tethered solutions offer continuous and real-time aerial video-stream, allowing persistant data collection and analysis. A tethered drone is a compact tool, easy to transport and deploy, that gives access to various valuable traffic data (trajectories, behaviors, vehicle types etc…), which are crucial information for individual end user (drivers), networks and transport operators or public authorities, to answer mobility challenges. Count, measure and analyse in order to understand road-user behaviour, analyse trajectories and detec anomalies. With the deployment of a single UAV during several hours, continuously, get a more comprehensive look at traffic nodes.