by Clear-Vu Lighting

MTLx LED Tunnel & Transit Fixtures

IP66/IP67 rated, vibration-resistant LED fixtures engineered for the harshest underground and infrastructure environments.

MTLx tunnel light fixture — extruded aluminum housing with integral uplight and quick-release mounting bracket
Clear-Vu Flagship

Built for the Toughest Environments on Earth

The MTLx series is Clear-Vu Lighting's flagship tunnel and transit platform — deployed in 15+ NYC MTA subway stations and major infrastructure projects nationwide. Engineered for 50,000+ hours of continuous operation in corrosive, high-vibration environments where failure is not an option.

  • IP66/IP67 sealed against water ingress, dust, and corrosive atmospheres
  • IK10 impact rated — withstands 20 joules of mechanical impact
  • DALI 3-step emergency dimming for critical egress scenarios
  • Multiple beam patterns — narrow, medium, wide, and asymmetric distributions
  • BABA/BAA compliant — manufactured in Central Islip, NY

Key Specifications

Lumen Output Range 5,000 – 30,000+ lumens (model dependent)
Correlated Color Temperature 4000K / 5000K standard
CRI ≥ 70 (80+ CRI available)
Ingress Protection IP66 / IP67
Impact Rating IK10 (20 joules)
Operating Temperature -40°C to +55°C (-40°F to +131°F)
Vibration Resistance EN 60068-2-6 compliant
Housing Material Die-cast aluminum, corrosion-resistant powder coat
Lens Tempered glass, impact-resistant
Beam Patterns Narrow, Medium, Wide, Asymmetric
Dimming DALI, 0-10V, 3-step emergency dimming
Rated Lifespan L80 > 50,000 hours
Mounting Surface, pendant, wall bracket, rail-mount
Serviceability Optional tool-less access for driver swap and routine maintenance
Voltage 120-277VAC / 347-480VAC (universal driver)
Certifications UL/ETL Listed, DLC QPL, BABA/BAA Compliant
MTLx photometric polar plot showing the candlepower distribution of available beam patterns
Photometric polar distribution — available beam patterns
MTLx fixture dimensional drawing with measurements
Fixture dimensions

Features & Benefits

IP66/IP67 Sealed Housing

Fully sealed die-cast aluminum housing withstands water jets, submersion, dust, and corrosive tunnel atmospheres. No gasket degradation over rated lifespan.

Vibration-Resistant Design

EN 60068-2-6 compliant vibration resistance handles constant train traffic, mechanical equipment, and seismic activity without optical degradation.

DALI 3-Step Emergency Dimming

Integrated DALI driver with 3-step emergency dimming protocol ensures critical egress lighting during power events. Automatic fail-safe to minimum output.

Multiple Beam Distributions

Narrow, medium, wide, and asymmetric optic options. Precision-engineered lenses deliver uniform illumination across tunnel cross-sections and platform areas.

Corrosion-Resistant Construction

Marine-grade powder-coated aluminum housing with stainless steel fasteners. Engineered for salt air, tunnel wash chemicals, and high-humidity environments.

50,000+ Hour L80 Lifespan

Over 50,000 hours to L80 lumen maintenance reduces replacement cycles, maintenance costs, and track-access shutdowns in active transit environments.

Optional Tool-Less Access

Tool-less latches available as an option for driver swap and routine maintenance — cutting in-tunnel service time during track-access windows when every minute counts.

Every LED has a driver. The question is where it lives.

“Driverless” LED has become a transit procurement buzzword — but the patents that promise it (including U.S. Patent No. 11,832,361) explicitly contain an LED driver. The real engineering question isn’t whether the driver exists. It’s whether you can replace it without replacing the whole fixture.

90%

of LED luminaire failures originate in the driver

Industry field data. The driver is the weakest electrical link — and the part you most need to access cheaply.

10 min

Modular driver swap on MTLx

vs. 30–45 min for sealed integrated “driverless” designs that require full fixture replacement and re-aiming.

$3M–$7M

25-year cost gap, 1,200-fixture install

Difference between a serviceable architecture and a sealed one over a typical capital lifecycle, when you include track-access labor.

Read the full 23-page analysis

How a battery fails matters as much as how it performs

Underground emergency lighting is the only system where catastrophic failure modes are unacceptable. Lithium-ion is highly capable above ground — but the failure characteristics that matter under a river, a mountain, or a city are different ones.

Property NiMH (MTLx default) LFP (Li-ion) NiCd (legacy)
Failure modeGradual capacity lossThermal runaway possibleMemory effect, sudden loss
Aging predictabilityStable, monitorableStable with proper BMSUnpredictable cliff drops
Charging architectureSimple, no BMS requiredRequires battery mgmt systemSimple but inefficient
Disposal & HAZMATNo toxic heavy metalsSpecialized recyclingCadmium — HAZMAT liability
Best fitUnderground / sealed environmentsAbove-ground, ventilatedLegacy systems only
Source: When the Lights Must Work, Clear-Vu Lighting whitepaper (Feb 2026). 10-page analysis with full chemistry data.
Get the full battery chemistry whitepaper

Ready to Specify MTLx?

Our engineering team provides photometric layouts, custom specifications, and project-specific compliance packages for tunnel and transit projects.

MTLx Compliance & Certifications

Product-level compliance status. For project-specific certificates of compliance, contact sales@clearvulighting.com.

Note: DLC qualification status varies by model number, wattage, and configuration. Always verify the specific DLC product ID at designlights.org for utility rebate eligibility.