For practitioners and advocates across our sector, Vision Zero is a moral goal, one which rightfully leads to us removing risk and creating layers of protection ‘systemically’ within the Safe System. But as we deliver this change together and casualty numbers on our roads (hopefully) come down, there is a challenge for evaluators: Less Data. How can we tell what works with a scarcity of outcome data?

Who do you go to when you want change on your street - your councillor, your MP, your mayor? For most of us, the answer is "I have no idea." And that’s the root of the problem.