{"schemaVersion":"1.0","id":"collisions-over-time","dataset":"collision-trend","title":"Five years of collisions","description":"Fatal, serious and slight, held apart so the serious ones stay visible.","methodology":"London police-reported personal-injury collisions by severity in the latest five-year DfT STATS19 files. Series remain separate because slight collisions vastly outnumber fatal collisions. Publisher provisional status is retained rather than silently mixed with validated annual data.","category":"transport","categoryLabel":"Transport","cadence":"annual","placeholder":false,"landingPage":"https://londongraph.com/g/collisions-over-time","markdown":"https://londongraph.com/g/collisions-over-time/index.html.md","source":{"name":"Department for Transport","url":"https://www.gov.uk/government/statistical-data-sets/road-safety-open-data","licence":"Open Government Licence v3.0","licenceUrl":"https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/"},"updatedAt":"2026-07-31T14:28:49.889Z","release":{"label":null,"publishedAt":null,"resourceUrl":null,"methodologyUrl":null,"sha256":null},"observations":[{"series":"fatal","buckets":["2015","2016","2017","2018","2019"],"values":[266,228,262,218,240],"unit":"collisions","metadata":[{},{},{},{},{}]},{"series":"serious","buckets":["2015","2016","2017","2018","2019"],"values":[3762,4578,7244,7656,7326],"unit":"collisions","metadata":[{},{},{},{},{}]},{"series":"slight","buckets":["2015","2016","2017","2018","2019"],"values":[46358,45446,46672,43400,43060],"unit":"collisions","metadata":[{},{},{},{},{}]}],"areaStatistics":null,"visualizations":[{"id":"overview","label":"Trend","description":"Fatal, serious and slight, held apart so the serious ones stay visible.","url":"https://londongraph.com/g/collisions-over-time","renderer":"primary","default":true,"timeControl":"inherit","datasets":[],"transform":null,"controls":null,"metrics":[],"caveat":null},{"id":"change","label":"Change","description":"Show the change from each preceding published period.","url":"https://londongraph.com/g/collisions-over-time?view=change","renderer":"delta","default":false,"timeControl":"inherit","datasets":[],"transform":null,"controls":null,"metrics":[],"caveat":null},{"id":"share","label":"Share over time","description":"Normalize each period to show how the mix changes.","url":"https://londongraph.com/g/collisions-over-time?view=share","renderer":"share-trend","default":false,"timeControl":"inherit","datasets":[],"transform":null,"controls":null,"metrics":[],"caveat":null}],"availability":"observations","note":"The release is complete for the measures represented on the graph page."}