Victoria line a pollution hotspot

[capitalomnibus]

Well that is something TfL and the mayor have shut their gobs about. I am sure they know but ignore it, because it is trains. I wonder if it is to do with regenerative braking. A bit worrying it has the worst and the line is entirely Underground which you would think would be better as it would not be getting pollution from those evil motor vehicles we keep getting told about.

Report on London's 'dangerous' air quality cites Victoria line as pollution hotspot

www.guardian-series.co.uk/news/15889493.Report_on_London_s__dangerous__air_quality_cites_Victoria_line_as_pollution_hotspot/

[routew15]

Jan 23, 2018 1:44:47 GMT capitalomnibus said:

Well that is something TfL and the mayor have shut their gobs about. I am sure they know but ignore it, because it is trains. I wonder if it is to do with regenerative braking. A bit worrying it has the worst and the line is entirely Underground which you would think would be better as it would not be getting pollution from those evil motor vehicles we keep getting told about.

Report on London's 'dangerous' air quality cites Victoria line as pollution hotspot

www.guardian-series.co.uk/news/15889493.Report_on_London_s__dangerous__air_quality_cites_Victoria_line_as_pollution_hotspot/

What makes you think it is linked to the regenerative breaking?

[capitalomnibus]

Jan 23, 2018 18:20:51 GMT routew15 said:

Jan 23, 2018 1:44:47 GMT capitalomnibus said:

Well that is something TfL and the mayor have shut their gobs about. I am sure they know but ignore it, because it is trains. I wonder if it is to do with regenerative braking. A bit worrying it has the worst and the line is entirely Underground which you would think would be better as it would not be getting pollution from those evil motor vehicles we keep getting told about.

Report on London's 'dangerous' air quality cites Victoria line as pollution hotspot

www.guardian-series.co.uk/news/15889493.Report_on_London_s__dangerous__air_quality_cites_Victoria_line_as_pollution_hotspot/

What makes you think it is linked to the regenerative breaking?

Because none of the other lines suffer that bad

[snoggle]

Jan 24, 2018 14:31:30 GMT capitalomnibus said:

Jan 23, 2018 18:20:51 GMT routew15 said:

What makes you think it is linked to the regenerative breaking?

Because none of the other lines suffer that bad

I suspect it is nothing to do with the regenerative braking. I suspect it is more to do with the very intensive level of service being run with more track and wheel wear plus vastly higher numbers of people.

[checks for report]

I have dug out the IMechE report - see page 23. It makes no reference to regenerative braking - it is all about fine metallic dust from brakes and train/wheel wear as I expected. The effectiveness of train ventilation systems is also responsible for pulling in more dust into train carriages. Of course the Vic Line has much more effective ventilation now than it used to do.

www.imeche.org/docs/default-source/1-oscar/reports-policy-statements-and-documents/imeche-air-quality-report.pdf?sfvrsn=2

[routew15]

Jan 24, 2018 14:31:30 GMT capitalomnibus said:

Jan 23, 2018 18:20:51 GMT routew15 said:

What makes you think it is linked to the regenerative breaking?

Because none of the other lines suffer that bad

I only ask as the article says “The report highlighted several problem areas on the tube, including the Victoria line, with the Bakerloo line had the highest airborne respirable dust levels“ so couldnt see the link myself.