Field Testing of visibility solutions for Freight Train Rear-End signals


Currently, within the EU both tail lamps and retro-reflective plates

are authorised as rear-end signals for international freight trains.

However, in some parts of the railway network only the tail lamps

are approved. When freight trains fitted with reflective plates

travel into these areas, the plates have to be replaced with

tail lamps,increasing crossing times and costs.


As part of a larger ERA project, OptiConsulting was

commissioned by SGS Correl Rail to plan and conduct field

tests to establish the optical performance of a number of

rear-end lighting solutions.The object was to see which

solution delivered acceptable visibility in a range of simulated

operational lighting and environmental conditions.

The tests were conducted over a 6-week period in a 200

metre indoor test facility. The lighting solutions included

LED tail lamps and retro-reflective plates (these lit by typical

train head lamps: halogen, LED and HID technology).



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