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CrashStats

SP4 road accidents: crash map and statistics

Police recorded 5,433 road traffic collisions in the SP4 postcode district, Wiltshire, from 1979 to 2025, and 8,148 people were killed or injured in them. Of those collisions, 144 were fatal and 1,140 were serious.

In 2025 police recorded 82 collisions, up 28% on 2024 (64).

Collisions since 1979
5,433
448th highest of 2,813 postcode districts
Casualties
8,148
1.50 per collision
Fatal collisions
144
165 people killed
Serious collisions
1,140
1,400 seriously injured
Collisions in 2025
82
Up 28% on 2024
Casualties in 2025
118
Up 28% on 2024

Road collision statistics for SP4

Collisions by severity, 1979 to 2025

  • Fatal1442.7%
  • Serious1,14021%
  • Slight4,14976%

What the data shows

  • SP4 had 721 collisions from 2016 to 2025, 19% fewer than the 886 from 2006 to 2015.
  • 24% of collisions in SP4 were fatal or serious, against 20% across Great Britain.
  • 822 children under 16 were killed or injured in SP4, 10% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 35% of collisions in SP4.

Where SP4 ranks among 2,813 postcode districts

Most collisions
448th
Most casualties
301st
Most fatal collisions
83rd
Most serious collisions
254th

Collisions by day of the week

  • Monday761 (14%)
  • Tuesday713 (13%)
  • Wednesday746 (14%)
  • Thursday772 (14%)
  • Friday937 (17%)
  • Saturday824 (15%)
  • Sunday680 (13%)

Light conditions

  • Daylight3,999 (74%)
  • Dark, no street lighting956 (18%)
  • Dark, street lights lit422 (7.8%)
  • Dark, street lights unlit29 (0.5%)
  • Dark, lighting unknown27 (0.5%)

Type of road

  • Single carriageway4,525 (83%)
  • Dual carriageway507 (9.3%)
  • Roundabout332 (6.1%)
  • One way street or slip road66 (1.2%)
  • Not recorded3 (0.1%)

Speed limit at the scene

  • 20 mph26 (0.5%)
  • 30 mph1,333 (25%)
  • 40 mph459 (8.4%)
  • 50 mph113 (2.1%)
  • 60 mph2,938 (54%)
  • 70 mph564 (10%)

Weather at the time

  • Fine, no high winds4,226 (78%)
  • Raining, no high winds733 (13%)
  • Fine with high winds121 (2.2%)
  • Fog or mist119 (2.2%)
  • Raining with high winds113 (2.1%)
  • Snowing, no high winds35 (0.6%)
  • Snowing with high winds7 (0.1%)
  • Other27 (0.5%)
  • Not recorded52 (1%)

Who was hurt

  • Car occupant5,734 (70%)
  • Motorcyclist942 (12%)
  • Pedestrian530 (6.5%)
  • Cyclist333 (4.1%)
  • Van occupant292 (3.6%)
  • Goods vehicle occupant (over 3.5 tonnes)131 (1.6%)
  • Bus or coach occupant65 (0.8%)
  • Minibus occupant47 (0.6%)
  • Other vehicle occupant42 (0.5%)
  • Taxi or private hire car occupant30 (0.4%)
  • Other2 (under 0.1%)

Source: Department for Transport, STATS19 road safety data

SP4 road accidents by year

Collisions and casualties in SP4, 1979 to 2025

Collisions in SP4 peaked at 183 in 1981; 2025 had 82.

  • Collisions
  • Collisions in 2025
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202582118
20246492
202362101
20226494
20216989
20205591
201979115
20186892
201778109
2016100134
201587127
201492124
201383126
201277115
201174116
201076126
200983136
200891135
2007101156
2006122186
2005118158
2004136204
2003139197
2002142191
2001126212
2000136218
1999145217
1998152237
1997143220
1996140244
1995126189
1994135193
1993124196
1992135224
1991127204
1990118173
1989139214
1988143208
1987170246
1986154232
1985162231
1984138201
1983135189
1982160244
1981183273
1980148230
1979152221

Map of recent crashes in SP4

Map of the 24 most recent crashes in SP4

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

  • 24 crashes
  • Serious
  • Slight

Recent road crashes in SP4

The 24 most recent collisions in SP4 happened between 20 September and 19 December 2025.

Severity

Crashes by road in SP4

The A345 has the most collisions in SP4, 1,223 of 5,433 (23%), followed by the A303 (1,098).

Collisions in SP4 on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA3451,2231,87931238
2ndA3031,0981,83650215
3rdA33859189917125
4thA30168285728
5thA3028146226335
6thA344122191529
7thA360103186419
8thB3085465308
9thB30843140010
10thB30865601

Council areas covering SP4

Collisions in SP4 were recorded in 3 council areas. Wiltshire has 5,262 of 5,433 (97%).

Collisions in SP4 by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stWiltshire5,2627,8921381,094
2ndTest Valley167252644
3rdSwindon3302

Towns in SP4

Collisions in SP4 were recorded in 2 towns, led by Amesbury (687) and Durrington and Bulford (346).