N. Bekiaris-Liberis, C. Roncoli and M. Papageorgiou, "Structural observability of multi-lane traffic with connected vehicles," in IEEE 20th International Conference on Intelligent Transportation Systems, 2017, pp. 185-192. doi: 10.1109/ITSC.2017.8317634
https://doi.org/10.1109/ITSC.2017.8317634
We establish sufficient and necessary conditions for the (weak) structural observability as well as the strong structural observability of lane-based highway traffic. Based on these results, we characterize the fixed detector configurations that guarantee the proper operation of a proposed traffic state estimation scheme. The structural observability analyses are based on a data-driven model, which is introduced for the per-lane traffic density dynamics. The proposed model is derived from the well-known conservation law equation via utilization of position and speed information from connected vehicle reports.