Hi Simon, (geowanking list) I have been doing some research into road accident incidence in the UK. I started this work back in about 2000 and it has been on the back burner for a while.
It is very difficult to know what is a sensible denominator for a rate or a comparison to look at incidence of road accidents. You can try to build up an explanatory model of the variation, but I found that nothing really works because the theoretically desirable data is not available. Both intrinsic risk of a fatal road accident and exposure to risk are interrelated and change over time. I can argue that knowing where all the vehicles are at any time to a high level of spatial and temporal detail should help, but sadly I don't expect that data to become available for this research for some time yet... What use is an analysis at state resolution, or indeed any resolution? What spatial resolution do the incidence data have? I found it interesting to look at change over time (for one or more years) at as high a level of spatial resolution as the data permits. In doing this it is useful to use some distance weighted generalisation to make the patterns visible while examining large regions. The first thing you might notice are new roads, but also it is possible to see geographical patterns and wonder... Yes, and when I observed new roads and roads moving I wondered if this was captured in available digital map data. At the time the data did not exist, but maybe it is getting there now :-) I would like to have a crowd sourcing application that allows the public to say where they think is dangerous and where they have had near misses. This might be very useful data for such analysis. Thanks for the post. Best wishes, Andy http://www.geog.leeds.ac.uk/people/a.turner/ -----Original Message----- From: [EMAIL PROTECTED] on behalf of Simon (Vsevolod) Ilyushchenko Sent: Sun 11/23/2008 6:45 PM To: [email protected] Subject: [Geowanking] Mapping US fatal collisions data Hi, I have plotted the 2005-2007 fatal collision data collected by US DOT in Google Earth. See the post here: http://www.thedaysarenumbered.com/2008/11/fatal-us-car-collisions-2005-2007.html. I used both raw data and state totals to draw some conclusions on the relative safety of different locations and driving conditions. I will appreciate any feedback on the visualization and analysis! Thanks, Simon _______________________________________________ Geowanking mailing list [email protected] http://geowanking.org/mailman/listinfo/geowanking_geowanking.org _______________________________________________ Geowanking mailing list [email protected] http://geowanking.org/mailman/listinfo/geowanking_geowanking.org
