The maze of one way streets and no entries in Harbord Village. This maze represents an area-wide approach to traffic calming rather than intervening in a single street. An approach like this is proven in the literature to be effective at reducing pedestrian injury from collision.
The Transportation Association of Canada has launched a project to update the Canadian Guide to Neighbourhood Traffic Calming.
The NationI Collaborating Center for Public Health Policy also has a neat literature review - Urban Traffic Calming and Health: A Literature Review - exploring the impact of approaches to traffic calming on four determinants of health.