Print Email Facebook Twitter Macroscopic Traffic State Estimation Title Macroscopic Traffic State Estimation: Understanding Traffic Sensing Data-Based Estimation Errors Author van Erp, P.B.C. (TU Delft Transport and Planning) Knoop, V.L. (TU Delft Transport and Planning) Hoogendoorn, S.P. (TU Delft Transport and Planning) Department Transport and Planning Date 2017-11-01 Abstract Traffic state estimation is a crucial element in traffic management systems and in providing traffic information to road users. In this article, we evaluate traffic sensing data-based estimation error characteristics in macroscopic traffic state estimation. We consider two types of sensing data, that is, loop-detector data and probe speed data. These data are used to estimate the mean speed in a discrete space-time mesh. We assume that there are no errors in the sensing data. This allows us to study the errors resulting from the differences in characteristics between the sensing data and desired estimate together with the incomplete description of the relation between the two. The aim of the study is to evaluate the dependency of this estimation error on the traffic conditions and sensing data characteristics. For this purpose, we use microscopic traffic simulation, where we compare the estimates with the ground truth using Edie's definitions. The study exposes a relation between the error distribution characteristics and traffic conditions. Furthermore, we find that it is important to account for the correlation between individual probe data-based estimation errors. Knowledge related to these estimation errors contributes to making better use of the available sensing data in traffic state estimation. To reference this document use: http://resolver.tudelft.nl/uuid:a3e76fe8-9c63-451c-8a1b-e15652ddcdd2 DOI https://doi.org/10.1155/2017/5730648 ISSN 0197-6729 Source Journal of Advanced Transportation, 2017 Part of collection Institutional Repository Document type journal article Rights © 2017 P.B.C. van Erp, V.L. Knoop, S.P. Hoogendoorn Files PDF 5730648.pdf 1.98 MB Close viewer /islandora/object/uuid:a3e76fe8-9c63-451c-8a1b-e15652ddcdd2/datastream/OBJ/view