Modern construction and operation of highways require high‑accuracy 3D models of roads and roadside infrastructure. A terrestrial laser scanner is ideal for these tasks. In particular, 3D scanning significantly improves the efficiency of:
— creating topographic plans and digital terrain models of the corridor;
— building road longitudinal profiles;
— determining carriageway width and pavement markings condition;
— computing curve radii;
— determining embankment height and monitoring subgrade condition;
— identifying ponding locations on the pavement;
— detecting pavement deformations;
— calculating repair quantities;
— modelling highway interchanges.
Mobile laser mapping
Mobile laser mapping is also used successfully in road engineering.
A 3D model combined with panoramic imagery enables photorealistic 3D with precise measurements.
Railways
Managing complex railway track and infrastructure requires rapid creation of 3D models and solving analytical tasks on them.
Terrestrial laser scanning effectively solves railway monitoring tasks:
— inventory of railway infrastructure objects;
— tying track infrastructure to a geodetic coordinate system;
— monitoring problematic sections to identify natural obstacles (vegetation);
— computing critical parameters (contact wire and power line sag, subgrade subsidence, etc.);
— determining infrastructure constraints for special rolling stock with loads;
— building longitudinal and cross profiles of the track;
— computing optimal train trajectories;
— identifying sections requiring repair.
