The A31: where people are seriously hurt
Over 2021–2025, 171 people were killed or seriously injured in 152 collisions on the A31, making it the 66th worst numbered road in Britain by that measure.
152
serious or fatal collisions
171
people killed or seriously injured
16
collisions that took a life
#66
of 150 numbered roads
What the record shows
The A31 carries 614 recorded injury collisions over the period, 152 of them serious or fatal. Serious injury concentrates in Dorset, New Forest, Guildford, with 3 further areas also recording collisions. Collisions here are more likely than average to be fatal: 11% against 7% across the numbered network, which usually points to higher speeds. Most collisions were recorded on 60 mph sections. The worst year of the period was 2025 with 38 serious collisions, and the count is up 27% between 2021 and 2025.
Every serious and fatal collision on the A31
Blue markers are serious collisions, red crosses fatal. Click any marker for the year. Zoom in to see the specific junctions and stretches where they cluster.
Where along the route
- Dorset43 KSI
- New Forest27 KSI
- Guildford24 KSI
- East Hampshire20 KSI
- Waverley18 KSI
- Winchester16 KSI
Local authority areas with the most serious collisions on this road.
The trend
Serious and fatal collisions on the A31
2025: 38 (up 81% on the year before) · peak 38 in 2025 · +26.7% across the period
Axis clipped to the data range to show year-on-year movement.
About the A31
How many accidents happen on the A31?
Police recorded 614 injury collisions on the A31 over 2021–2025, of which 152 were fatal or serious. Those serious collisions left 171 people killed or seriously injured, including 16 fatal collisions.
Is the A31 a dangerous road?
By volume of serious injury it ranks 66 of the 150 numbered roads we analyse, and 60 among a roads. That is a count rather than a rate: longer and busier roads accumulate more collisions, so a high ranking reflects exposure as well as risk.
Where on the A31 do collisions happen?
They concentrate in Dorset, New Forest, Guildford. The map on this page plots every serious and fatal collision recorded on the route, so you can see the specific stretches rather than the total.
Counts include every collision the police recorded on this road number across all authority areas. They are not adjusted for traffic volume or road length, so treat them as a measure of where injury concentrates rather than a per-mile risk rating. Method. Free to reuse with attribution to this page.
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