The map contains collision data from 1 January 2011 to 31 December 2015. Each year’s collision data is released around May, once the data has been fully collected, validated and verified by the Department for Transport. More about collection/release of data.
If you think that a collision has been plotted incorrectly then please let us know at firstname.lastname@example.org. The validation checks we conduct include scanning for plotting errors however we are unable to verify the location of every single collision record that we receive from the police.
Not every single collision that occurred in Devon will be recorded on the map. If a collision did not result in personal injury and/or was not reported to the police, it will not be recorded. More information about collision recording is available at GOV.UK – Road accidents and safety statistics guidance.