However, there seems to me to be a flaw in the equation. Research shows that the more densely populated a place is, the quicker they tend to walk. Therefore the average walking speed in Worcester will be different from the walking speed in London. Not only that, but some places will have a higher proportion of people in their vicinity who are less mobile due to age or illness. I hope, therefore, that there will be local nuance in the decisions made.
It may seem like very trivial news to some, but it has the potential to make our streets more accessible to those who walk the most.