Health impact assessment of a roundabout?

I've done health impact assessments on all types of proposals. The smallest was of a specific health facility. The biggest was of a population plan for several hundred thousand people. 

This is the first time I've seen an HIA of a roundabout though. The process scales to any size!

Janette Sadik-Khan: To revitalise planning try new things that are cheap

New York's Transportation Commissioner on what NYC has done to try to change street life, via Francesca in the LinkedIn group.