Fluffer (London Underground)

A "fluffer" within the context of the London Underground, and potentially other similar railway systems, is a colloquial term for an individual employed to apply lubricant to the train tracks. This lubrication is intended to reduce friction and noise as trains navigate curves and points (switches/turnouts).

The application of lubricant by fluffers is crucial for maintaining the smooth and efficient operation of the Underground network. Reduced friction extends the lifespan of both the tracks and train wheels, minimizing wear and tear. Furthermore, the lubrication significantly reduces the screeching noise that would otherwise occur, improving the passenger experience and reducing noise pollution in residential areas near the lines.

The role is generally performed by track maintenance workers. The methods used can vary, from manually applying lubricant with a brush or applicator to using specialized equipment mounted on maintenance vehicles.

The term "fluffer" is considered informal and is unlikely to be used in official documentation or communication within Transport for London (TfL).