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CrashStats

SN13 road accidents: crash map and statistics

Police recorded 2,066 road traffic collisions in the SN13 postcode district, Wiltshire, from 1979 to 2025, and 2,844 people were killed or injured in them. Of those collisions, 37 were fatal and 517 were serious.

In 2025 police recorded 27 collisions, up from 19 in 2024.

Collisions since 1979
2,066
1,728th of 2,813 postcode districts, highest first
Casualties
2,844
1.38 per collision
Fatal collisions
37
37 people killed
Serious collisions
517
595 seriously injured
Collisions in 2025
27
19 in 2024
Casualties in 2025
38
Up 58% on 2024

Road collision statistics for SN13

Collisions by severity, 1979 to 2025

  • Fatal371.8%
  • Serious51725%
  • Slight1,51273%

What the data shows

  • SN13 had 198 collisions from 2016 to 2025, 30% fewer than the 282 from 2006 to 2015.
  • 27% of collisions in SN13 were fatal or serious, against 20% across Great Britain.
  • 273 children under 16 were killed or injured in SN13, 9.6% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 37% of collisions in SN13.

Where SN13 ranks among 2,813 postcode districts

Most collisions
1,728th
Most casualties
1,713th
Most fatal collisions
1,608th
Most serious collisions
1,438th

Collisions by day of the week

  • Monday285 (14%)
  • Tuesday299 (14%)
  • Wednesday313 (15%)
  • Thursday336 (16%)
  • Friday352 (17%)
  • Saturday282 (14%)
  • Sunday199 (9.6%)

Light conditions

  • Daylight1,484 (72%)
  • Dark, no street lighting285 (14%)
  • Dark, street lights lit274 (13%)
  • Dark, street lights unlit14 (0.7%)
  • Dark, lighting unknown8 (0.4%)
  • Not recorded1 (under 0.1%)

Type of road

  • Single carriageway1,979 (96%)
  • Roundabout70 (3.4%)
  • Dual carriageway11 (0.5%)
  • One way street or slip road5 (0.2%)
  • Not recorded1 (under 0.1%)

Speed limit at the scene

  • 20 mph1 (under 0.1%)
  • 30 mph733 (35%)
  • 40 mph106 (5.1%)
  • 50 mph36 (1.7%)
  • 60 mph1,123 (54%)
  • 70 mph67 (3.2%)

Weather at the time

  • Fine, no high winds1,605 (78%)
  • Raining, no high winds290 (14%)
  • Fog or mist53 (2.6%)
  • Raining with high winds43 (2.1%)
  • Fine with high winds40 (1.9%)
  • Snowing, no high winds10 (0.5%)
  • Snowing with high winds4 (0.2%)
  • Other9 (0.4%)
  • Not recorded12 (0.6%)

Who was hurt

  • Car occupant1,740 (61%)
  • Motorcyclist501 (18%)
  • Cyclist232 (8.2%)
  • Pedestrian206 (7.2%)
  • Van occupant116 (4.1%)
  • Goods vehicle occupant (over 3.5 tonnes)20 (0.7%)
  • Bus or coach occupant8 (0.3%)
  • Other vehicle occupant8 (0.3%)
  • Taxi or private hire car occupant6 (0.2%)
  • Minibus occupant5 (0.2%)
  • Other2 (0.1%)

Source: Department for Transport, STATS19 road safety data

SN13 road accidents by year

Collisions and casualties in SN13, 1979 to 2025

Collisions in SN13 peaked at 88 in 1979; 2025 had 27.

  • Collisions
  • Collisions in 2025: 27
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20252738
20241924
20232331
20221925
20211926
20201213
20192029
20182028
20171720
20162230
20153653
20142331
20132431
20122437
20112840
20102136
20092838
20083646
20072534
20063752
20055182
20045380
20034160
20024261
20014157
20004778
19994561
19985780
19974468
19964462
19955587
19945072
19933748
19925474
19915073
19904762
19897291
198882113
19876283
198670101
198580108
198486115
19836980
19828498
19816781
19806891
197988116

Map of recent crashes in SN13

Map of the 24 most recent crashes in SN13

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

  • 24 crashes
  • Fatal
  • Serious
  • Slight

Recent road crashes in SN13

The 24 most recent collisions in SN13 happened between 1 February and 3 December 2025.

Severity

Crashes by road in SN13

The A4 has the most collisions in SN13, 674 of 2,066 (33%), followed by the B3353 (279).

Collisions in SN13 on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA46741,01314174
2ndB3353279340457
3rdB3109150231538
4thA365118187433

Council areas covering SN13

Collisions in SN13 were recorded in 2 council areas. Wiltshire has 2,054 of 2,066 (99%).

Collisions in SN13 by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stWiltshire2,0542,82336514
2ndBath and North East Somerset81713

Towns in SN13

Collisions in SN13 were recorded in 3 towns, led by Corsham (622) and Box, Wiltshire (139).