Cylindrical objects - what are they?

[Shimbleshanks]

Does anyone know what are those cylindrical objects you see from time to time alongside rail tracks. I can best describe them (sorry don't have a photo) as a flanged cylinder about a foot diameter and a foot long, mounted at a 45 degree angle from the vertical. Usually painted yellow, though not always. You get them on electrified and non-electrified tracks.

I'm guessing they're something to do with track-circuiting but could be wrong.

[steam for ever]

I know what you mean. I think they are access ducts to do with what you have suggested. I'm not altogether sure and would like to know the real answer myself.

[Seabrook]

Would they be the Grease Pots for rail flange lubricators, usually located before curves in track alignment?

[wyvern]

Would they be the Grease Pots for rail flange lubricators, usually located before curves in track alignment?

If you can get a long enough look there will be four or so of approx half inch diameter pipes leading to the side of the rail.

[Ian White]

Thats right they are Grease Pots for rail flange lubricators

All the best,Ian