When you submit to populist arguments, especially when driving 20mph in the opposite direction of the evidence, you’re handing them the keys

The Welsh Government has clearly signalled that it’s about to make major changes to the way its 20mph default speed limit on urban roads is implemented. The new First Minister and Welsh Labour leadership have said they “hold their hands up” and that guidance “has to be corrected”.

This is a hugely important decision, and not just because of the 20mph issue itself. The matter sits firmly on the boundary between evidenced policy-making on the one hand and populism on the other.