Air pollution: New 50mph speed limits to be enforced - BBC News
Drivers face warnings and fines on five of Wales' most polluted roads as new limits are introduced.
The speed limits have been introduced in a bid to cut air pollution

Drivers breaking the speed limit on some of Wales' most polluted roads could face fines from next week.

Cameras have been installed at five locations in south and north-east Wales, where 50mph zones have been introduced.

The Welsh government said air pollution had already been cut by up to 47%.

From 4 October, warning letters will be sent to those breaking the limits - with the worst offenders facing prosecution.

The speed limit on the M4 between junctions 24 and 28 in Newport changed to 50mph in March, with average speed camera enforcements to be introduced at a later date.

The M4 stretch through the Brynglas tunnels in Newport will change from a variable limit to a fixed 50mph

All the A-roads are dual carriageways, where the 70mph limit would otherwise apply.

The new zones were introduced after the Welsh government agreed to work on new plans to tackle air pollution following legal proceedings in 2018.

Figures for 2020 and 2021 showed nitrogen dioxide at the five locations had generally been below the legal limit, due to reduced traffic because of the pandemic.

There are three 50mph areas being enforced across south Wales

Two parts of north-east Wales will have the new enforced limits

But with traffic now returning to pre-pandemic levels, the Welsh government said it wanted to see "better compliance" in those areas.

Climate change deputy minister, Lee Waters, said things needed to be done differently if climate change was to be tackled.

The A494 between Ewloe and the border with England will be covered by the enforcement zone

He said the speed limits were working but enforcement was essential "to achieve the reductions we need to make in the shortest possible time".

Teresa Ciano, manager of road safety partnership GoSafe, said enforcement would inform people of the importance of obeying the speed limit, and prosecute the "most dangerous" drivers.