It's a good thing.

Totally in support. Unfortunately there is some misinformed opinion about the huge success in Wales. In truth it has been called "the most successful road safety intervention in modern times"

"First 20mph year sees 100 fewer killed or badly hurt."

"The number of casualties, was also the lowest for the three month-period since records began in 1979."

"casualties from road collisions. This was 35% lower than in the same quarter in 2023, and the lowest since records began."

"the number of collisions was 26% lower than the same period the year before."

First Minister Mark Drakeford, said: "We can now say with confidence that in its first year the speed limit reduction represents the most successful road safety intervention in modern times.

Source. https://www.bbc.co.uk/news/articles/c78w1891z03o

"Insurer esure also reported a 20% reduction in vehicle damage claims in Wales following the implementation of a default 20mph limit in built-up areas, estimating a nationwide rollout could save drivers approximately £50 annually on motor insurance."

"also delivered a surprising benefit: a reduction in car insurance costs. Recent data from Confused.com revealed the most significant annual drop in UK car insurance premiums in over a decade, with the average cost of comprehensive cover falling by £161 . . . 20mph speed control zones have played a key role."

Source. Source. https://www.driving.org/20mph-speed-limits-and-their-impact-on-car-insurance/

That's just the traffics stats, its not only benefiting the car driver. There are also quality of life improvements that allow the entire population to have less anxiety and move more freely around the community with ease. These are hard to quantify but should not be discounted.