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CrashStats

SO23 road accidents: crash map and statistics

Police recorded 4,110 road traffic collisions in the SO23 postcode district, Winchester, from 1979 to 2025, and 5,107 people were killed or injured in them. Of those collisions, 53 were fatal and 708 were serious.

In 2025 police recorded 59 collisions, up 9% on 2024 (54).

Collisions since 1979
4,110
855th highest of 2,813 postcode districts
Casualties
5,107
1.24 per collision
Fatal collisions
53
60 people killed
Serious collisions
708
779 seriously injured
Collisions in 2025
59
Up 9% on 2024
Casualties in 2025
67
Down 4% on 2024

Road collision statistics for SO23

Collisions by severity, 1979 to 2025

  • Fatal531.3%
  • Serious70817%
  • Slight3,34981%

What the data shows

  • SO23 had 525 collisions from 2016 to 2025, 30% fewer than the 745 from 2006 to 2015.
  • 19% of collisions in SO23 were fatal or serious, against 20% across Great Britain.
  • 497 children under 16 were killed or injured in SO23, 9.7% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 27% of collisions in SO23.

Where SO23 ranks among 2,813 postcode districts

Most collisions
855th
Most casualties
964th
Most fatal collisions
1,101st
Most serious collisions
940th

Collisions by day of the week

  • Monday582 (14%)
  • Tuesday607 (15%)
  • Wednesday594 (14%)
  • Thursday574 (14%)
  • Friday789 (19%)
  • Saturday567 (14%)
  • Sunday397 (9.7%)

Light conditions

  • Daylight3,060 (74%)
  • Dark, street lights lit632 (15%)
  • Dark, no street lighting338 (8.2%)
  • Dark, lighting unknown69 (1.7%)
  • Dark, street lights unlit11 (0.3%)

Type of road

  • Single carriageway2,428 (59%)
  • Dual carriageway802 (20%)
  • One way street or slip road554 (13%)
  • Roundabout302 (7.3%)
  • Not recorded24 (0.6%)

Speed limit at the scene

  • 20 mph111 (2.7%)
  • 30 mph2,395 (58%)
  • 40 mph212 (5.2%)
  • 50 mph391 (9.5%)
  • 60 mph506 (12%)
  • 70 mph494 (12%)
  • Not recorded1 (under 0.1%)

Weather at the time

  • Fine, no high winds3,361 (82%)
  • Raining, no high winds487 (12%)
  • Raining with high winds68 (1.7%)
  • Fine with high winds41 (1%)
  • Fog or mist22 (0.5%)
  • Snowing, no high winds10 (0.2%)
  • Snowing with high winds2 (under 0.1%)
  • Other109 (2.7%)
  • Not recorded10 (0.2%)

Who was hurt

  • Car occupant2,597 (51%)
  • Pedestrian929 (18%)
  • Motorcyclist747 (15%)
  • Cyclist400 (7.8%)
  • Bus or coach occupant157 (3.1%)
  • Van occupant141 (2.8%)
  • Goods vehicle occupant (over 3.5 tonnes)73 (1.4%)
  • Taxi or private hire car occupant24 (0.5%)
  • Minibus occupant23 (0.5%)
  • Other vehicle occupant14 (0.3%)
  • Other2 (under 0.1%)

Source: Department for Transport, STATS19 road safety data

SO23 road accidents by year

Collisions and casualties in SO23, 1979 to 2025

Collisions in SO23 peaked at 135 in 1997; 2025 had 59.

  • Collisions
  • Collisions in 2025: 59
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20255967
20245470
20236283
20225160
20212734
20203377
20195364
20186992
20175157
20166676
20156486
20146582
20136575
20126886
20117394
20107384
20096986
20088398
200797113
200688105
20056979
200489102
200393106
200289104
2001102123
200088111
1999106123
1998111151
1997135166
199699117
1995113132
1994105146
1993100125
199293123
199184115
1990103127
1989110133
1988112140
1987114143
1986108127
1985118143
1984111136
1983127148
1982114149
1981114154
1980116143
1979117152

Map of recent crashes in SO23

Map of the 24 most recent crashes in SO23

Use the arrow keys to move the map and the plus and minus keys to zoom.

  • 24 crashes
  • Serious
  • Slight

Recent road crashes in SO23

The 24 most recent collisions in SO23 happened between 8 August and 19 December 2025.

Severity

Crashes by road in SO23

The A33 has the most collisions in SO23, 392 of 4,110 (9.5%), followed by the M3 (366).

Collisions in SO23 on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA333925671468
2ndM3366493446
3rdA34288396442
4thA272265303254
5thA333200245644
6thA3090198241338
7thB3330163192126
8thB3335145173218
9thB3420128153020
10thB3047102130418
11thB340492107115
12thA3187117121
13thA30927684115
14thB3040516109
15thB3331475217
16thB3044415108
17thB3355263218
18thB3057192712
19thB30906901
20thB30495500

Council areas covering SO23

Collisions in SO23 were recorded in 2 council areas. Winchester has 4,103 of 4,110 (99.8%).

Collisions in SO23 by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stWinchester4,1035,09853708
2ndTest Valley6800

Towns in SO23

Collisions in SO23 were recorded in 2 towns, led by Winchester (2,563) and Kings Worthy (272).