A couple of sobering road traffic accident map mash-ups:
Bike Accident Tracker maps a remarkable 1147 bike accidents in San Francisco over the past two years. Analysing who was to blame. Coming to the conclusion it’s usually the cyclists fault.
The Tri-Sate Transportation Campaign – encompassing the New York, New Jersey and Connecticut Metropolitan region – analyses pedestrian fatalities plus the age and gender of those killed. The report consists of a series of Google My maps and factsheets. For example this is the map for Manhattan