We’ll all have 20mph speed limits eventually

There were a lot of headlines over the weekend as Wales introduced 20 mile per hour speed limits across all of its residential streets. It’s prompted a lot of debate, though it is not new to many of us. Twenty is common across London, several counties and cities, and many other places have district or street-by-street limits lower than the official 30. I live on a 20mph street myself.

Residential streets in Wales will now be 20mph by default, though local authorities can apply for an excepti...