Friday 25 August 2017 13.01 BST
A row of terraced houses in the south Wales valleys could be demolished after the stretch of road outside their front doors was identified as having the worst air pollution in the UK outside London.
Some residents of Woodside Terrace in Crumlin who believe their health is suffering, or despair at the constant roar of traffic, have welcomed the idea of the houses being razed.
Others who have invested money, time and love into their homes hope alternatives such as a bypass or restrictions on lorries might be introduced instead.
The Guardian revealed last year that government data showed the levels of nitrogen dioxide on this stretch of the A472 were exceeded only by part of Marylebone Road in central London.
Though the spot in Crumlin is surrounded by fields and hills, the road is a main cross-route between two valleys, carrying more than 21,000 vehicles a day.
“I’ve had enough,” said Gloria Matthews, a 60-year-old carer who has lived on Woodside Terrace for 17 years. “From 6am to 7pm the cars and lorries and vans rumble by. You can feel the vibrations, you can smell the fumes and you can never open your windows.
“It’s got much worse over the years. Some people live in their cellars now to try to get away from the traffic.”
The route is busy with local traffic, commuters travelling to Newport and Cardiff and is a shortcut for lorry drivers keen to avoid the M4, which is often congested, and the Severn Bridge tolls of £20 for HGVs. Though HGVs and vans represent only 4% of traffic on the road, they account for more than a third of emissions.