cyclists on skyride cheapside city of london
Road safety I Environment I Utopia I
Over 3600 Cyclists were either killed or seriously injured on the streets of the 32 London boroughs in the nine years between 2000 and 2008. This map shows the location and some details of each accident. This is version 2 of the map, which has incorporated many of the changes suggested by users, including differentiated markers, more details on date and time, and of the manoeuvre carried out by the cyclist.You can see maps of other areas of Great Britain here

*Report of the National Audit Office on pedestrian and cyclist casualties in Great Britain page 9

**A short definition of Seriously injured is an injury which involves treatment as a hospital in-patient. For a more precise discussion see Jon's comments on the "Your Shout" pages

I am indebted to Mike Williams for his excellent Google Maps API Tutorial and for the slabs of his code, which I have shamelessly stolen.
The purpose of this map is to show where accidents occur and some information about the collisions; it's not supposed to put you off cycling. It is still safer* to cycle to the station than to walk.

Cyclist fatality Cyclist serious** injury

Use the usual GoogleMaps controls to zoom and pan around. At lower zoom levels not all accidents are shown, as this would overwhelm your browser. Fatalities are always shown. If there are four or less bars above the slider then all the accidents in the map area are displayed. At zoom levels less than this some accidents are not shown. If you are looking at a specific area make sure you are adequetely zoomed in.

Clicking on a marker reveals some background to the accident.
    The date and time of the accident
    The gender of the cyclist and the manoeuvre being carried out by the cyclist at the time of the accident
    The other vehicle involved in the collision
Locations are accurate to about plus or minus 10m. At high zoom levels the road map tends to be a little inaccurate and then it's best to switch to satellite view.
If you have any comments on this map please post them on our Your Shout Page

And if this is all to much for you a visit to Real Cycling London's most entertaining blog about everyday biking, might take your mind off things.

This map is based on an analysis by Ted Reilly of data from Department for Transport. Road Accident Statistics Branch, Road Accident Data, 2000-2008 [computer file]. Colchester, Essex: UK Data Archive [distributor], September 2009. SN: 6022.