RAIL INFRASTRUCTURE DIAGNOSTICS
Ballast condition drives track performance. We measure it without digging.
Precision rail surveying with science-based, field-proven methods
Fouled ballast loses its ability to drain water and hold track geometry, accelerating deterioration and raising derailment risk. KHEERAN scans the track centre and both shoulders in a single pass, producing a continuous profile of your substructure — where fouling starts, how thick the clean ballast is, and where water is trapped.
Ballast investigation with multi-frequency GPR (400 MHz–2 GHz).
Rail track geometry measurement and deterioration trending.
Railway asset scanning and clearance mapping with LiDAR.
RAPID, NON-DESTRUCTIVE, CONTINUOUS
We manage your survey from scoping to decision-ready report.
Three services, one integrated picture of your track
Survey data your maintenance planners can act on — substructure, geometry and assets in one campaign
Ballast Investigation with GPR
Continuous mapping of ballast fouling, clean-ballast thickness and trapped water using multi-frequency GPR — calibrated to your ballast and reported by chainage.
Rail Track Geometry
Track geometry scanning that locates gauge, alignment, twist and surface defects — and ties geometry faults back to their substructure causes.
Railway Asset Scanning with LiDAR
High-density LiDAR capture of track assets, structures and clearances for inventory, condition assessment and 3D modelling.
Ballast Investigation with GPR
Continuous mapping of ballast fouling, clean-ballast thickness and trapped water using multi-frequency GPR — calibrated to your ballast and reported by chainage.
Rail Track Geometry
Track geometry scanning that locates gauge, alignment, twist and surface defects — and ties geometry faults back to their substructure causes.
Railway Asset Scanning with LiDAR
High-density LiDAR capture of track assets, structures and clearances for inventory, condition assessment and 3D modelling.
We operate across Canada, USA, Brazil and Australia
Generating more value from every maintenance dollar with continuous track intelligence
Survey Lines per Pass
Max Antenna Frequency (MHz)
Hours to First Results
Countries Served
From heavy-haul to transit, our surveys inform real maintenance decisions
Our projects span ballast investigations, geometry campaigns and LiDAR asset capture
LiDAR Railway Asset Scan
A representative KHEERAN LiDAR asset-scanning engagement — the scope and deliverables a typical project provides.
Scope. High-density mobile LiDAR capture of a rail corridor: track, turnouts, signals, OCS/catenary or third-rail infrastructure, platforms, bridges, tunnels, drainage and lineside assets, together with the surrounding terrain and earthworks.
Method. A hi-rail-mounted scanner array collects thousands of points per second within roughly a 100 m radius while cameras record 360° geo-referenced colour imagery. Tightly-coupled GNSS and inertial (IMU) navigation keeps the solution stable even where satellite signal is blocked by vegetation or structures, and the track centreline is measured directly from the scan so every asset carries a chainage and a horizontal/vertical offset from the rail-head plane.
AI processing. Point clouds of billions of points are tiled, denoised and classified using deep-learning models that separate ground from structure and extract assets automatically — delivering accuracy and scale that manual extraction cannot match.
Deliverables. Classified, georeferenced point cloud (LAS/LAZ); asset inventory with locations and attributes; structure-gauge and loading-gauge clearance analysis; vegetation and right-of-way encroachment mapping; and 3D/BIM models ready for design, simulation or asset-management systems. Combined with our GPR and geometry services, the result is a complete picture of the corridor — above and below the ballast line.
Planning an asset scan? Talk to us →
Rail Track Geometry Campaign
A representative KHEERAN track geometry engagement — the scope and deliverables a typical campaign provides.
Scope. Continuous measurement of track geometry across a subdivision or network segment: gauge and gauge variation, horizontal alignment, vertical profile, cross-level/superelevation, twist and warp, curvature and superelevation runoff — referenced to your chainage and GPS.
Standards. Geometry is evaluated against the governing track-safety standards — FRA 49 CFR Part 213 in the USA, the Transport Canada Rules Respecting Track Safety, and EN 13848 internationally — with exceptions classified by the resulting Class of Track and flagged where a two-class drop indicates serious non-compliance.
Method. Measurement from a hi-rail vehicle or EN 13848-4 trolley using a chord-based (mid-chord ordinate) or space-curve approach, sampled at fine intervals with mechanical gauge contact that performs in adverse weather and vegetation. A Track Quality Index rates each segment good/average/poor within its class, and run-over-run comparison reveals deterioration rate.
Deliverables. Geometry brush charts with flagged defects, exception and curve-analysis lists (peak value, length, location), KML maps and CSV data, limiting-speed and Class+1 analysis, and — combined with our GPR substructure data — root-cause pairing that distinguishes geometry faults caused by fouled ballast, trapped water or formation from surface-level defects.
Planning a geometry campaign? Talk to us →
GPR Ballast Investigation Programme
A representative KHEERAN ballast investigation — the scope and deliverables a typical engagement provides.
Scope. Continuous substructure survey of mainline trackage: track centre and both ballast shoulders captured in a single pass from a hi-rail vehicle at normal hi-rail speeds, with GPS positioning and video asset mapping throughout. No excavation, minimal possession time.
Method. Multi-frequency GPR — 2 GHz horn antennas for fouling detection via void-scattering analysis, 400 MHz antennas for deep substructure layering — cross-checked against targeted calibration samples with sieve analysis, so fouling classifications reflect the client's actual ballast.
Deliverables. Fouling categories (clean through highly fouled) by chainage for centre and shoulders, clean-ballast thickness profiles, trapped-water and ballast-pocket flags, GIS condition mapping, statistical summaries by segment, and prioritized recommendations for undercutting, shoulder cleaning and drainage remediation. First-pass results within 24 hours of survey completion.
Planning a ballast investigation? Talk to us →