LED Retrofit Lighting Upgrade for Alstom Rail Rolling Stock

Client: Alstom Rail


Application: Passenger rolling stock interior lighting upgrade.

Product: LMX LED Rail-Compliant LED Retrofit Tubes.


Standards Applied: EN 50155, EN 50121-3-2, EN 45545-2, EN 60598-1/2

Project Requirements

Alstom Rail required a compliant LED retrofit system to replace legacy fluorescent lighting across selected rolling stock fleets. The new system needed to meet strict railway electrical, safety and EMC standards, while delivering improvements in energy efficiency, reliability, and passenger comfort.

The key technical requirements included:

  • Reduction in power consumption and maintenance intervention frequencies.
  • Compliance with EN 50155 (electronic equipment used on rolling stock).
  • EMC compliance to EN 50121-3-2.
  • Fire and smoke performance to EN 45545-2.
  • Mechanical robustness suitable for vibration and shock exposure.
  • Compatibility with existing luminaires and wiring.
  • High-efficiency optical output with stable performance over long operating cycles.

LMX LED Technical Solution

LMX LED supplied a range of rail-compliant LED retrofit tubes purpose-built for rolling stock applications and certified to the required industry standards.

Standards Compliancy:

1. EN 50155 – Electronic Equipment on Rolling Stock

  • Temperature, vibration, humidity, shock, voltage fluctuation requirements met.
  • Robust driver design ensures stable performance under variable onboard supply conditions.

2. EN 50121-3-2 – EMC Requirements for Rolling Stock

  • Electromagnetic emissions and immunity suitable for railway environments.
  • Prevents interference with onboard signalling and electronic systems.

3. EN 45545-2 – Railway Fire Safety and Smoke Standards

  • Materials and components meet required fire hazard classifications.
  • Suitable for installation in passenger areas.

4. EN 60598-1 / 60598-2 – Luminaire Safety Standards

  • Ensures electrical safety, mechanical integrity, and long-term reliability.

Technical Features Delivered

High-Efficiency LED Chipset

  • Significantly reduced energy consumption compared to fluorescent lamps.
  • Improved power factor and reduced thermal load.
  • Long lumen maintenance and extended operational life.

Rail-Ready Mechanical and Electrical Design

  • Vibration- and shock-resistant housing suitable for continuous rolling stock movement.
  • Immediate retrofit capability into existing fittings without major wiring changes.
  • Flicker-free output aligned with passenger comfort and accessibility requirements.

Superior Optical Performance

  • High CRI and uniform illumination across the passenger saloon.
  • Stable light output under voltage variation and onboard power disturbances.

Operational Outcomes

  • Substantial reduction in running costs through improved energy efficiency.
  • Enhanced passenger experience with brighter, more consistent interior lighting.
  • Fewer maintenance cycles, reducing downtime and labour requirements.
  • Improved reliability under rail operating conditions.
  • Full compliance with railway electrical, EMC, fire, and safety standards.

LMX LED’s compliant LED retrofit tube solution enabled Alstom Rail to modernise lighting across their rolling stock while achieving long-term operational, safety, and cost benefits.

Case Study Project


A compliant LED retrofit system replacing legacy fluorescent lighting across selected rolling stock fleets. Compatibility with existing luminaires and wiring. The new system meets strict railway electrical, safety and EMC standards, while delivering improvements in energy efficiency, reliability, and passenger comfort.

Review

“We have purchased rolling stock rail tubes from LMX LED and were highly impressed with both the
product quality and their professionalism. They answered all our technical questions clearly, and
the tubes passed our strict compliance requirements with ease. Excellent service and a smooth overall experience.”
Patrick Bernard, System Engineer – Alstom