Free Tool · Beta

AGi Tunnel Sim — tunnel geometry, ready for AGi32, in under a minute.

A free design tool for the tunnel-lighting community. Define the tunnel profile, alignment, crosspassages, and luminaire rows — download DXF, CSV, and an AGi32-compatible geometry file. Skip the three-day Revit setup; start your photometric calc this afternoon.

Request Access See how it works
.DXF (R2018) .CSV (luminaire schedule) .AGI (native) NFPA-130 calc planes

Built by the engineering team behind MTLx — deployed across NYC MTA, BWI Airport, and major US transit programs.

CLEAR-VU LIGHTING · AMERICAN-MADE SINCE 1957 · BABA-COMPLIANT FIXTURES

A 60-Second Workflow

Three inputs. One download. A real starting point.

Define your tunnel geometry the way an engineer thinks about it — cross-section, alignment, luminaire layout — and walk away with files that drop straight into AGi32 or any DXF-aware tool.

tunnel-sim.clearvulighting.com
CROSSPASS PLAN VIEW · R=2000ft · GRADE=1.5% PROFILE: ROUND BORE · 18'-6" · L=2,000 FT ● 80 PRIMARY ● 27 EMERGENCY X (chainage) Y (offset)

Stylized preview — actual tool exports DXF (R2018), CSV luminaire schedule, and .AGI native geometry.

What's in the box

Engineered for how tunnel jobs actually work.

Six tunnel profiles

Rectangular, arched, D-shape, horseshoe, round bore, and station-platform sections. Add bench walls (left/right, custom width and height) on any profile.

Horizontal radius + vertical grade

Curved alignment, not just straight chord. Enter the horizontal radius (e.g. R=2000 ft) and vertical grade (%) — the geometry follows the actual centerline.

Crosspassages & portal caps

Drop a crosspassage doorway at any station and side. Portal end caps close out the tunnel cleanly at chainage 0 and L. Closed polygons every time.

Staggered + emergency rows

Left/right alternating spacing for visual uniformity. Mark every Nth luminaire as emergency — placed on the LUM_EMERGENCY layer with default 3-ft calc plane on the safety walk.

OCS, rails, calc planes

Catenary / OCS wire polyline at configurable height (default 13.5 ft). Two running rails on the chord at standard gauge. Calc plane at 3 ft above track — ready for AGi32.

DXF + CSV + .AGI export

DXF R2018 with named layers (LUM_PRIMARY, LUM_EMERGENCY, TRACK, OCS, WALL, FLOOR). CSV luminaire schedule with x/y/z/orientation. Optional native .AGI manifest with layer reflectance attributes.

3D axonometric preview

Orbit, zoom, and inspect the tunnel before you export. Primary luminaires in yellow, emergency in red. Catch geometry mistakes before AGi32 does.

Presets + save/load

Built-in presets: 18'-6" round bore, 37 ft mined cavern, TYPE I 14×14 box. Save your project as JSON locally; reload it any time.

Three steps

From blank page to DXF — in under a minute.

01

Define the tunnel

Pick a profile or start from a preset. Enter the cross-section dimensions, length, alignment (radius + grade), and any crosspassages. The 3D preview updates live.

02

Place luminaire rows

Add one row per fixture type. Set surface (ceiling, wall, safety walk), spacing, mount height, transverse offset, tilt, stagger, and emergency fraction. Mix and match as many rows as you need.

03

Download & calc

Click Generate. Get a single ZIP with DXF, CSV, and optional .AGI. Open in AGi32 (or your photometric tool of choice) and start the calc — no Revit detour.

Built for

Tunnel lighting designers and the engineers who back them up.

Roles

  • Lighting designers at transit AECs
  • Electrical engineers (transit, tunnel, infrastructure)
  • MEP discipline leads on tunnel projects
  • Specifiers writing NFPA 130 / IES RP-22 compliant designs
  • In-house photometric engineers at design-build contractors
  • Independent consultants doing DOT / transit-authority work

Project types

  • Subway and metro tunnels (bored, cut-and-cover)
  • Light-rail and commuter-rail tunnels
  • Highway and vehicular tunnels
  • Pedestrian / utility tunnels
  • Station platforms and concourses
  • Underground egress and crosspassages
FAQ

Common questions

Is it really free?
Yes. The tool is free to use for any tunnel or transit lighting project. We built it because every tunnel job starts with the same three days of geometry setup, and we'd rather you spend that time on the photometric design itself. No payment, no per-export charge, no usage limits.
Do I need an AGi32 license?
No — not to use AGi Tunnel Sim. The tool outputs standard DXF and CSV files that work in any DXF-aware photometric tool (AGi32, DIALux, Visual, or even straight CAD). The optional .AGI file is an AGi32-native manifest with layer reflectance attributes — useful if you do have AGi32, but not required.
What output formats do I get?
DXF (R2018) with named layers for primary luminaires, emergency luminaires, track, OCS wire, walls, and floor — each tagged with reflectance values via XDATA. CSV luminaire schedule with x/y/z position, surface, orientation, and emergency flag. .AGI (optional) — native AGi32 manifest. All three come in a single ZIP download.
Is my project data private?
Yes. Geometry runs on our server only long enough to generate your files — it isn't stored, logged, or attached to your account. Project data only lives in your browser. You can save a project as JSON to your own machine and reload it later, but we never see it.
How does access work?
Submit the form below with your name, work email, company, and role. We'll review same-business-day and email you a personal access link. If you reach out on LinkedIn, connect with Daniel Lax and DM "AGITOOL" — he'll add you directly and the email will fire automatically.
Can I use it for projects that aren't tunnels?
The geometry engine is tuned for linear infrastructure with a cross-section profile and a chainage axis — so it works for tunnels, station platforms, concourses, covered walkways, and similar. It's not the right tool for open-air parking decks or warehouse layouts. If you're not sure, ask — we'd rather route you to the right tool than waste your time.
Will MTLx fixtures show up in the output by default?
No. The tool is fixture-agnostic — you label each luminaire row with whatever fixture name you want. If you do happen to be specifying MTLx, the labels will match your spec sheet, but there's no obligation, no upsell, and no fixture data baked into the geometry.
Step 1 of 1

Request access to AGi Tunnel Sim

Tell us a bit about you and the project you're working on. We'll review and email a personal access link to your work address — usually same business day, never longer than next-business-day.

If you reach out on LinkedIn instead — connect with Daniel Lax and DM "AGITOOL" — same email flow fires.

What you'll get
One email with your access link, plus an optional follow-up two weeks later asking what we should add next. No newsletter spam, no sales sequences. Reply STOP and we never email you again — your access link stays active.

Access request

Keep reading

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