Countdown to rollout of 20mph in Gwent

31st May 2023

From 17 September 2023 a default 20mph speed limit will come into force on roads where people live, work and play across Wales.

The changes will happen on roads where streetlights are placed no more than 200 yards apart. These are usually located in residential and built-up areas.

The Welsh Government is changing the default speed limit to make streets safer. A 20mph limit is expected to reduce the likelihood of collisions and the risk of injury or death.

The new legislation does not mean all roads will change to 20mph. Some roads will remain at 30mph and local authorities will decide which ones will keep their current speed limit.   

A Welsh public health study estimated that the 20mph default speed limit could result in:

  • 40% fewer collisions.
  • Save 6 to 10 lives every year.
  • Avoiding 1200 to 2000 people being injured every year.

Deputy Minister for Climate Change, with responsibility for transport, Lee Waters said: “The evidence from around the world is very clear – reducing speed limits reduces collisions and saves lives. Slower speeds also help create a safer and more welcoming community, giving people the confidence to walk and cycle more, improving their health and wellbeing whilst protecting the environment.”

You can find out more information about 20mph on the Welsh Government website.