StreetMapper Maps French Railways for Safer Tracks
FIT ESIC is helping France’s national railway company SNCF improve safety and inform track upgrade works with the mobile laser scanning system StreetMapper. Owned and operated by FIT ESIC, the rail mounted StreetMapper was used to survey several hundreds of kilometres of track, generating engineering grade survey data on behalf of SNCF. The laser generated computer model was used to build a detailed 3D topographic map of the tracks and its surroundings. This provided length data and cross profiles as well as detecting potentially dangerous objects near the track.
“Since we took delivery of our StreetMapper system we have surveyed thousands of kilometres of roads as well as hundreds of kilometres of railway tracks,” commented Marc Daeffler, Director of the Engineering Division at FIT ESIC. “By working closely with various SNCF engineering teams; survey, track and cantenary, we came up with innovative solutions, utilising StreetMapper to capture and extract large amounts of geometric information.”
FIT ESIC also worked side by side with UK based 3D Laser Mapping, in addition to the technical teams within SNCF, to overcome potential challenges associated with working on the railway. These included access for personnel along the track to measure control points, installation and operation of the laser mapping system within the confines of a railway carriage and strong vibrations caused by the motion of the train. 3D Laser Mapping also supported FIT ESIC by devising specific algorithms for the processing of trajectories.
Bruno Landes, Head of the Works Assistance and Surveying Division at SNCF (Societe Nationale des Chemins de Fer Francais) France’s national state-owned railway company, added: “LiDAR technology has without a doubt improved the management of our railway infrastructure. The data has been used as topographic inputs for railway modernisation studies, gauge studies and electrification studies, for example.”