A Uwb/Ins Open-Hardware Experimental System Application in Cycling Safety Study

This study proposes an integrated portable ultra-wideband/inertial navigation system (UWB/INS) to track cyclists’ trajectories. The system is based on open-source hardware and also delivers an open-source code for an adaptive Kalman filter to enhance positioning precision for localization at outdoor experimental site. The results demonstrate that the system can deliver reliable trajectories for low mobility objects. To mitigate incidents, varied traffic management measures are tested at an experimental site. Based on the trajectory data, the statistical features of cyclists’ velocities are evaluated and compared. A new proposed geometric design is found to be most effective, when compared with conventional traffic signs