20 mph Speed Limits Explained: Wales’s Default Limit and 20 mph Zones Elsewhere

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About Course

20 mph limits are now much more common, and since September 2023 most former 30 mph roads in Wales have a default 20 mph limit. This course explains in plain English how to tell what the limit is, the difference between 20 mph “zones” and “limits”, and simple ways to stay comfortably within the limit.

Tutwoo is an independent learning provider. This course gives general information from official guidance and is not legal, financial or medical advice.

© 2026 Tutwoo UK Limited. This course was created in-house by Tutwoo and is our original work. It is for your own learning only: please do not copy, share, record or resell it.

What Will You Learn?

  • Know the default speed limit on lit roads in England, Scotland and Wales
  • Understand the change to 20 mph on most Welsh residential roads
  • Tell the difference between a 20 mph zone and a 20 mph limit
  • Use simple habits to keep to lower speed limits

Course Content

Course Lessons

  • Speed limits on lit roads: what the Highway Code says
  • The default 20 mph limit in Wales
  • 20 mph zones, 20 mph limits and keeping to the limit

Sources & Further Reading
The official guidance this course is based on.

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