Tag Archives: Prashant Kumar

Cuts, air quality, and how Sadiq Khan has it wrong

While the public spending axe falls left, right and centre – this week it was MoD cuts – a thick seam of beneficial cuts lies neglected. I’m talking about traffic control: a field of vast public expenditure which is vexatious, … Continue reading

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A hole in SERA’s holistic approach

Announcing a proposal to limit speeds on the M1 near Sheffield to 60mph, the Today Programme interviewed Samantha Heath of SERA, an environmental pressure group linked to Labour. Her holistic approach seemed to boil down to lower speeds and fewer cars. … Continue reading

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Corporate manslaughter

There is increasing evidence that traffic fumes cause heart disease, respiratory disease, strokes, neurodegenerative conditions, early death, and now dementia. Ten years ago, in No Idle Matter, I wrote that traffic control multiplies harmful emissions by a factor of four. Engineering lecturer at … Continue reading

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Traffic lights and air quality

In No Idle Matter (2007), I wrote that the stop-start motion caused by traffic lights multiplies emissions and fuel use by a factor of four. In this piece, Prashant Kumar (University of Surrey) says air quality at signal-controlled junctions is no … Continue reading

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