Abstract
Abstract. In the recent years, the modelling of infrastructures has been receiving increasingly attention due to the importance of transport infrastructures for global economy, traffic safety and for the generation of high definition maps, essential to autonomous vehicles. This paper presents a simple method for the segmentation and classification of concrete barriers and guardrails in road surroundings. First steps of the method are aimed to delimit the region of the point cloud outside the driving lanes in which barriers and guardrails are installed. The purpose is to significantly reduce the size of point clouds in order to improve further processing. Then, barrier segmentation and classification are designed as parameter-dependent processes because the geometric features of roads and barriers and guardrails are mostly regulated by norms and standards. Results show a good performance in terms of classification in comparison of other state of the art methods. Better results were obtained for guardrails than for concrete barriers. The method has been tested in a set of point clouds acquired with a Mobile Laser Scanner from conventional roads and highways.
Highlights
IntroductionAs a result of the high level of road accidents, the European Union has set the goal of zero road deaths by 2050 (DGT, 2019)
In 2018, more than 25,000 people died in accidents in the European Union
Due to the importance of barriers and guardrails for traffic safety and for the generation of High Definition (HD) maps, the objective of this work is to develop an automated method for the extraction and characterization of barriers and guardrails from point clouds acquired from a terrestrial Mobile Laser Scanner (MLS)
Summary
As a result of the high level of road accidents, the European Union has set the goal of zero road deaths by 2050 (DGT, 2019). Barriers and guardrails on road edges are the main passive safety element to prevent road exits. Both the location and the characteristics of guardrails on road edges are established by regulations in each country (Ministerio de Fomento, 2014), and depend on the dangerousness and the road characteristics. Guardrails should be placed at access points to bridges or tunnels, embankments, ravines, rivers, reservoirs, walls, areas with posts, crossings over railroads, roads with daily traffic of more than 10,000 vehicles, and parallel roads with medians of less than 1 m. The start/end of the barrier can be done by embedding it in a slope, by folding it or by having an element that absorbs a frontal impact
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