Yup, especially on the older lines (Northern, Victoria, Jubilee, Bakerloo). Particulate pollution can be two orders of magnitude higher than at street level. This tends to be glossed over when trumpeting the success of ULEZ measures pushing people away from cars and onto public transport, and I say that as a non-car-owner.
replyPeople tend to walk 10-15 mins at either end when taking the tube, and will walk more through the day. My understanding is this activity is net positive despite the extra particulates while on the tube. I might be misremembering this with a study I read on cycling in road pollution though
replyAlmost certainly some asbestos dust still in there from prior decades as well, the tube is absolutely filthy and never cleaned properly
replyJust one more reason to wear an N95 on the Tube.
replyI've lived in London all my life and I only get black bogeys on days that I've been on the tube. Before COVID that was every day.
replyI lived on Upper Street in Angel, London by some traffic lights and there was always a layer of black dust inside. I assumed it was brake particulate.
replyEvery house inner London is covered in black soot from the days of coal fires. Have you ever seen one after it's been sandblasted?
replyTire wear was probably a greater source than brake wear.
replyIt is, but not just from it.
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