DynamicClearance Analyser
EN 15273-1
pCloud v2
Vehicle
Total length (2L)m
Bogie pivot spacing (2a)m
Body half-widthmm
Body heightmm
Track gaugemm
2D Clearance Envelope
No envelope loaded
OR USE BUILT-IN PROFILE
ACTIVE: UIC-505 (built-in)
Dynamic Model (EN 15273 §6)
I = max(0, V²/(127·R) − h) — cant deficiency
D = max(0, h − V²/(127·R)) — cant excess
Σqs = max(I,D) × k_qs — quasi-static
E_out = OT + Σqs + T + M
E_in = UT + Σqs + T + M
EN 15273-1:2013 §6.2+§6.3 asymmetric
V from Speed Source below ↓
CoG height h mm
Roll factor kqs mm/mm
Σqs = max(I,D) × k_qs — EN 15273-1 §A.3
k_qs=0.267: h=500mm (coaches, UIC)
Random addition T mm
Installation tolerance M mm
Speed source
Design Alignment Elements
No elements — add rows or click Example
DESIGN ORIGIN (georef)
Start Easting E₀ m
Start Northing N₀ m
Start Elevation Z₀ m
Initial azimuth °
Grade (const.)
# Type Len m R m Cant mm Dir V km/h
Total: 0 m
Measured Track (GTD)
No track loaded
☁ Point Cloud (LAS/LAZ)
No file loaded — use ☁ LAS / LAZ button above
no map
Class Filter
Cloud Colour Mode
Amber Zone (mm)
Display
Opacity
Throw scale ×
Navigator
Go ch:
Run analysis to enable navigator.
IFC4 Export
APPEARANCE
Transparency 30%
0% = fully opaque  ·  100% = invisible
Base profile
Outside (OT)
Inside (UT)
Orbit: L-drag  |  Pan: R-drag  |  Zoom: Scroll  |  Click track: jump to section
No analysis — load track & press ▶
OUTSIDE gauge: OT + Σqs + T + M
INSIDE gauge: UT + Σqs + T + M
BASE reference profile
Track centreline
Element boundaries
Cross-Section
Ready
Max OT — outside enlargement
mm · vehicle ends (outside of curve)
Max UT — inside enlargement
mm · vehicle middle (inside of curve)
Max Cant Deficiency I
mm (cant deficiency)
Max Σqs (speed-dependent)
mm = I × k_qs (replaces fixed input)
Total Envelope Width
mm at worst-case section
Critical Chainage
km+m · design chainage (XY-projected)
Station Results
Des.Ch m Elem V km/h I mm OT mm UT mm
Run analysis to populate
☁ POINT CLOUD ANALYSIS 0%
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Analysed
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Intrusions