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Cyngor Sir Ynys Môn - Isle of Anglesey County Council

20mph speed limits


Feedback on 20mph limit on Anglesey

Welsh Government is currently revising the exceptions guidance that highway authorities use to decide which roads should be 30mph.

We want you to let us know if you think a specific road (or section of road) on Anglesey should:

  • change from 20mph to 30mph
  • change from 30mph to 20mph
  •  stay at 20mph

We will review your feedback against the new exceptions guidance and consider if the speed limits on any of the roads (or section of roads), that we are responsible for should change.

This is likely to take several months.

Go to the feedback form for 20mph roads on Anglesey

We will not log general comments about the 20mph policy as this is a matter for Welsh Government.

You can contact Welsh Government.

Where we are now

On 17 September 2023, a default speed limit of 20mph came into force on many roads where people live, work and play on Anglesey, and the rest of Wales.

Welsh Government changed the default speed limit to make streets safer by reducing the likelihood of collisions - and death or injury from them. The changes happened on roads that were previously subject to a 30mph speed limit, usually located in residential and built-up areas which people use frequently.

Isle of Anglesey County Council’s highways team, in partnership with its highway maintenance term contractor, Griffiths Civil Engineering, have been busy putting up new 20mph speed limit signs along all affected roads. A total of nearly 700 signs have been replaced as part of this project.

20mph exceptions

The new legislation did not mean all roads were changed to 20mph. Some roads remained at 30mph. These are known as exceptions.

Following a public consultation with residents and local communities in early 2023, some roads were exempted and remained at their current speed limit of 30mph.

You can see which roads were affected on the Data Maps Wales website. 

On Anglesey the roads or parts of roads that stayed at 30mph are:

  • B5109 Pont-y-Brenin, Llangoed
  • A5025 Cemaes Bay
  • B5110 Marian-glas
  • A5025 Pentraeth
  • A5 Penrhos, Holyhead
  • A4080 Brynsiencyn
  • A5 Gaerwen (De-restriction)
  • A5 Caergeiliog
  • B4545 Four Mile Bridge
  • Llangefni Link Road
  • A5 Llanfairpwllgwyngyll
  • A545 Menai Bridge
  • A5 Gwalchmai

Plans can be found on our legal orders for highways webpage.

Safer communities

Isle of Anglesey County Council had previously introduced advisory 20mph speed limits outside schools due to the recognised health and safety benefits.

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

  • 40% fewer collisions
  • saving 6 to 10 lives every year
  • avoiding 1200 to 2000 people being injured every year

Evidence shows that people feel more comfortable to walk and cycle when vehicle speeds are slower, and it is safer for children to walk to school; and older people, disabled people or people with additional needs are also more able to travel independently.

You can find out more information and answers to questions you may have about 20mph on Welsh Government's website.