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Road collisions in Southampton
Police recorded 2,301 road collisions involving injury in Southampton between 2021 and 2025, about 460 a year. 9 of them were fatal, and an estimated 484 involved serious injury once DfT's severity adjustment is applied. These are reported injury collisions only: damage-only incidents and unreported injuries are not included.
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When collisions happen
The busiest hour was 5pm to 6pm, and 32% of collisions happened between 3pm and 7pm (close to the 32% across Great Britain). Wednesday had the most collisions, and 24% happened at weekends.
Trend over time
Reported collisions went from 436 in 2021 to 487 in 2025, a rise of 12%. Counts are affected by traffic levels, population and changes in how police record injuries, so Southampton should not be ranked against other areas on these numbers alone.
Who is affected
Across Southampton, 2,686 people were injured or killed in these collisions. Pedestrians were 17% of casualties (14% across Great Britain), pedal cyclists 17% (12%) and motorcyclists 16% (12%). Car and taxi occupants made up 42%. 2 of the pedestrians were killed.
Children aged 0 to 15 were 10% of casualties, higher than the 9% national share. People aged 16 to 25 were 25% (21% nationally), and people over 65 were 6% (10% nationally).
| Road user | Casualties | Share in Southampton | Share across GB |
|---|---|---|---|
| Pedestrians | 449 | 16.7% | 14.5% |
| Pedal cyclists | 444 | 16.5% | 11.9% |
| Motorcyclists | 441 | 16.4% | 12.4% |
| Car and taxi occupants | 1,119 | 41.7% | 54.4% |
| Bus and minibus occupants | 23 | 0.9% | 1.8% |
| Van and goods vehicle occupants | 45 | 1.7% | 3.5% |
| Other road users | 165 | 6.1% | 1.6% |
Casualties by age
| Age | Casualties | Share in Southampton | Share across GB |
|---|---|---|---|
| 0 to 5 | 40 | 1.5% | 1.6% |
| 6 to 10 | 73 | 2.7% | 2.6% |
| 11 to 15 | 158 | 5.9% | 4.8% |
| 16 to 20 | 350 | 13.0% | 10.6% |
| 21 to 25 | 310 | 11.5% | 11.0% |
| 26 to 35 | 609 | 22.7% | 20.8% |
| 36 to 45 | 437 | 16.3% | 15.8% |
| 46 to 55 | 323 | 12.0% | 12.8% |
| 56 to 65 | 233 | 8.7% | 10.1% |
| 66 to 75 | 89 | 3.3% | 5.3% |
| Over 75 | 63 | 2.3% | 4.5% |
Vehicles involved
18.9% of collisions involved a pedestrian casualty (17.7% nationally), 19.3% a cyclist (15.0%) and 18.8% a motorcyclist (15.3%). 1.3% involved a goods vehicle (3.9% nationally) and 21.9% involved a driver aged 17 to 24 (21.1%). 170 collisions involved an e-scooter.
| Vehicle | Vehicles | Share in Southampton | Share across GB |
|---|---|---|---|
| Cars and taxis | 2,671 | 64.5% | 69.7% |
| Vans (up to 3.5 tonnes) | 269 | 6.5% | 6.4% |
| Heavy goods vehicles | 30 | 0.7% | 2.3% |
| Motorcycles | 468 | 11.3% | 9.3% |
| Pedal cycles | 456 | 11.0% | 8.7% |
| Buses and minibuses | 60 | 1.4% | 1.8% |
| Other vehicles | 189 | 4.6% | 1.8% |
Collision hotspots in Southampton
These are the 100 metre squares with the most reported collisions in 2021 to 2025. Location is the average position of the collisions in each square, so treat it as approximate.
| # | Where | Junction type | Collisions | Fatal | Map |
|---|---|---|---|---|---|
| 1 | St Denys Road (A3035) | Crossroads | 18 | 0 | View on map |
| 2 | Hill Lane (A35) | Not at a junction | 18 | 0 | View on map |
| 3 | Itchen Bridge (A3025) | Crossroads | 16 | 0 | View on map |
| 4 | Burgess Road (A35) | Crossroads | 14 | 0 | View on map |
| 5 | Southern Road (A33) | Crossroads | 14 | 0 | View on map |
| 6 | Shirley Road (A3057) | Crossroads | 13 | 0 | View on map |
| 7 | Terminus Terrace (A33) | T or staggered junction | 11 | 0 | View on map |
| 8 | Northam Road (A3024) | T or staggered junction | 11 | 0 | View on map |
| 9 | The Avenue (A33) | T or staggered junction | 10 | 0 | View on map |
| 10 | Civic Centre Road (A3024) | Not at a junction | 10 | 0 | View on map |
| 11 | Western Esplanade (A3024) | T or staggered junction | 10 | 0 | View on map |
| 12 | Bellevue Road | Crossroads | 10 | 0 | View on map |
| 13 | Spring Road | Crossroads | 10 | 0 | View on map |
| 14 | Bassett Avenue (A33) | Not at a junction | 10 | 0 | View on map |
| 15 | Bassett Avenue (A33) | Crossroads | 9 | 0 | View on map |
| 16 | Northam Road (A3024) | Crossroads | 9 | 0 | View on map |
| 17 | Shirley Road (A3057) | Not at a junction | 9 | 0 | View on map |
| 18 | Brunswick Place (A3024) | Crossroads | 9 | 0 | View on map |
| 19 | Portsmouth Road (A3025) | Crossroads | 9 | 0 | View on map |
| 20 | Kingsway (A33) | Crossroads | 9 | 0 | View on map |
| 21 | Bitterne Road West (A3024) | Crossroads | 8 | 1 | View on map |
| 22 | Thomas Lewis Way (A335) | T or staggered junction | 8 | 0 | View on map |
| 23 | Portswood Road | T or staggered junction | 8 | 0 | View on map |
| 24 | Bitterne Road West (A3024) | Crossroads | 8 | 0 | View on map |
| 25 | Millbrook Flyover (A33) | Not at a junction | 8 | 0 | View on map |
Roads and streets with the most collisions
Each collision is matched to the nearest named road. Long roads and busy town centres collect the most, so this list shows where collisions are recorded, not which streets are riskiest.
| Road or street | Collisions | Fatal | Serious (est.) |
|---|---|---|---|
| The Avenue | 63 | 0 | 13 |
| Bassett Avenue | 48 | 0 | 9 |
| Portsmouth Road | 47 | 0 | 7 |
| Shirley Road | 45 | 0 | 6 |
| Burgess Road | 44 | 0 | 9 |
| Portswood Road | 44 | 1 | 12 |
| Thomas Lewis Way | 43 | 0 | 12 |
| Romsey Road | 41 | 0 | 8 |
| Bitterne Road West | 39 | 1 | 8 |
| Northam Road | 39 | 0 | 11 |
| Hill Lane | 38 | 2 | 6 |
| Winchester Road | 37 | 1 | 8 |
| Bursledon Road | 36 | 0 | 7 |
| St Denys Road | 34 | 0 | 3 |
| Millbrook Road West | 29 | 0 | 7 |
Numbered roads with the most collisions
92% of collisions happened on roads with a 30 mph limit or lower (69% nationally), and 1% on roads with a 60 or 70 mph limit (18% nationally). 63% were at or within 20 metres of a junction or roundabout, higher than the national 54%.
| Road | Collisions | Fatal | Serious (est.) |
|---|---|---|---|
| A33 | 228 | 0 | 43 |
| A3024 | 160 | 1 | 37 |
| A35 | 105 | 1 | 18 |
| A3057 | 100 | 0 | 17 |
| A335 | 79 | 0 | 19 |
| A3025 | 77 | 1 | 13 |
| A3035 | 51 | 0 | 9 |
| A334 | 31 | 0 | 6 |
| A27 | 22 | 0 | 5 |
| M271 | 14 | 0 | 3 |
| B3033 | 14 | 0 | 2 |
| B3038 | 9 | 0 | 5 |
| M27 | 8 | 0 | 1 |
| B3039 | 4 | 0 | 1 |
| A3055 | 1 | 0 | 0 |
Only numbered roads are listed here. Named streets are in the table above.
Conditions
31% of collisions in Southampton happened in darkness, higher than the 28% across Great Britain. 97% happened on roads classed as urban, higher than the national 67%.
Type of road
| Type of road | Collisions | Share in Southampton | Share across GB |
|---|---|---|---|
| Motorway | 22 | 1.0% | 3.0% |
| A(M) road | 0 | 0.0% | 0.2% |
| A road | 859 | 37.3% | 44.0% |
| B road | 28 | 1.2% | 12.5% |
| C road | 2 | 0.1% | 4.4% |
| Unclassified road | 1,390 | 60.4% | 35.9% |
Speed limit
| Speed limit | Collisions | Share in Southampton | Share across GB |
|---|---|---|---|
| 20 mph | 148 | 6.4% | 17.1% |
| 30 mph | 1,970 | 85.6% | 52.0% |
| 40 mph | 151 | 6.6% | 8.7% |
| 50 mph | 20 | 0.9% | 4.4% |
| 60 mph | 3 | 0.1% | 12.2% |
| 70 mph | 9 | 0.4% | 5.5% |
Junctions
| Junctions | Collisions | Share in Southampton | Share across GB |
|---|---|---|---|
| Not at a junction | 841 | 36.6% | 45.9% |
| T or staggered junction | 845 | 36.8% | 28.5% |
| Crossroads | 424 | 18.5% | 9.5% |
| Junction with more than four arms | 10 | 0.4% | 1.6% |
| Private drive or entrance | 99 | 4.3% | 2.2% |
| Other junction | 19 | 0.8% | 6.1% |
| Roundabout | 58 | 2.5% | 6.2% |
Light conditions
| Light conditions | Collisions | Share in Southampton | Share across GB |
|---|---|---|---|
| Daylight | 1,579 | 68.6% | 71.7% |
| Darkness, street lights lit | 632 | 27.5% | 20.6% |
| Darkness, street lights unlit | 11 | 0.5% | 0.7% |
| Darkness, no street lighting | 11 | 0.5% | 5.3% |
| Darkness, lighting unknown | 68 | 3.0% | 1.7% |
Urban or rural
| Urban or rural | Collisions | Share in Southampton | Share across GB |
|---|---|---|---|
| Urban | 2,228 | 96.8% | 67.2% |
| Rural | 73 | 3.2% | 32.8% |
About these figures
Only collisions involving injury that were reported to the police are counted. The figures are not adjusted for traffic volume or population, so they should not be used to rank areas against each other. Serious and slight splits use the Department for Transport's severity adjustment. Full explanation.