Road death data gets a closer look as two datasets are linked

The Department for Transport has started linking its STATS19 road collision records with death registration data held by the Office for National Statistics, in an effort to understand road fatalities more completely than either dataset can show on its own.

STATS19 is the system police forces use to record road collisions, and it has long been the main source of figures on people killed or seriously injured on UK roads. The Office for National Statistics, meanwhile, holds death registrations that capture cause of death as certified by a doctor. Because the two systems have never been routinely matched, some deaths that belong in both datasets may have been counted inconsistently or missed altogether.

The work matters to ordinary drivers because road casualty figures directly influence where safety money is spent, which roads get speed limit reviews, and how government sets targets for reducing deaths. If the underlying count is off, so is the policy built on top of it. Bringing the two datasets together gives a more accurate baseline, which in turn should lead to better-targeted road safety measures.

At this stage the Department for Transport describes the work as initial, meaning the full results and any revised casualty figures have not yet been published. Drivers do not need to take any action as a result of this data-linking exercise, but it is worth knowing that the official picture of road deaths in the UK may become more precise once the research is complete.