Esmorís Pena, Alberto ManuelLópez Vilariño, DavidArango, David F.Varela García, Francisco AlbertoCabaleiro Domínguez, José CarlosFernández Rivera, Francisco2023-06-262023-06-262023Esmorís, A. M., Vilariño, D. L., Arango, D. F., Varela-García, F.-A., Cabaleiro, José~C., & Rivera, F. F. (2023). Characterizing zebra crossing zones using LiDAR data. Computer-Aided Civil and Infrastructure Engineering, 1–22. https://doi.org/10.1111/mice.129681093-9687http://hdl.handle.net/10347/30794Light detection and ranging (LiDAR) scanning in urban environments leads to accurate and dense three-dimensional point clouds where the different elements in the scene can be precisely characterized. In this paper, two LiDAR-based algorithms that complement each other are proposed. The first one is a novel profiling method robust to noise and obstacles. It accurately characterizes the curvature, the slope, the height of the sidewalks, obstacles, and defects such as potholes. It was effective for 48 of 49 detected zebra crossings, even in the presence of pedestrians or vehicles in the crossing zone. The second one is a detailed quantitative summary of the state of the zebra crossing. It contains information about the location, the geometry, and the road marking. Coarse grain statistics are more prone to obstacle-related errors and are only fully reliable for 18 zebra crossings free from significant obstacles. However, all the anomalous statistics can be analyzed by looking at the associated profiles. The results can help in the maintenance of urban roads. More specifically, they can be used to improve the quality and safety of pedestrian routeseng© 2023 The Authors. Computer-Aided Civil and Infrastructure Engineering published by Wiley Periodicals LLC on behalf of Editor. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.http://creativecommons.org/licenses/by-nc-nd/4.0/Zebra crossing zonesLight detection and rangingLiDARSafety of pedestriansjournal article10.1111/mice.129681467-8667open access