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CrashStats

SA4 road accidents: crash map and statistics

Police recorded 5,327 road traffic collisions in the SA4 postcode district, Swansea, from 1979 to 2025, and 7,440 people were killed or injured in them. Of those collisions, 97 were fatal and 715 were serious.

In 2025 police recorded 33 collisions, up 6% on 2024 (31).

Collisions since 1979
5,327
480th highest of 2,813 postcode districts
Casualties
7,440
1.40 per collision
Fatal collisions
97
109 people killed
Serious collisions
715
922 seriously injured
Collisions in 2025
33
Up 6% on 2024
Casualties in 2025
47
Up 24% on 2024

Road collision statistics for SA4

Collisions by severity, 1979 to 2025

  • Fatal971.8%
  • Serious71513%
  • Slight4,51585%

What the data shows

  • SA4 had 464 collisions from 2016 to 2025, 56% fewer than the 1,048 from 2006 to 2015.
  • 15% of collisions in SA4 were fatal or serious, against 20% across Great Britain.
  • 864 children under 16 were killed or injured in SA4, 12% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 32% of collisions in SA4.

Where SA4 ranks among 2,813 postcode districts

Most collisions
480th
Most casualties
402nd
Most fatal collisions
299th
Most serious collisions
928th

Collisions by day of the week

  • Monday750 (14%)
  • Tuesday795 (15%)
  • Wednesday744 (14%)
  • Thursday744 (14%)
  • Friday882 (17%)
  • Saturday770 (14%)
  • Sunday642 (12%)

Light conditions

  • Daylight3,807 (71%)
  • Dark, street lights lit991 (19%)
  • Dark, no street lighting313 (5.9%)
  • Dark, street lights unlit113 (2.1%)
  • Dark, lighting unknown83 (1.6%)
  • Not recorded20 (0.4%)

Type of road

  • Single carriageway3,767 (71%)
  • Dual carriageway712 (13%)
  • Roundabout652 (12%)
  • One way street or slip road155 (2.9%)
  • Not recorded41 (0.8%)

Speed limit at the scene

  • 10 mph1 (under 0.1%)
  • 20 mph33 (0.6%)
  • 30 mph3,419 (64%)
  • 40 mph293 (5.5%)
  • 50 mph95 (1.8%)
  • 60 mph796 (15%)
  • 70 mph689 (13%)
  • Not recorded1 (under 0.1%)

Weather at the time

  • Fine, no high winds4,043 (76%)
  • Raining, no high winds759 (14%)
  • Raining with high winds126 (2.4%)
  • Fine with high winds85 (1.6%)
  • Fog or mist31 (0.6%)
  • Snowing, no high winds15 (0.3%)
  • Snowing with high winds4 (0.1%)
  • Other94 (1.8%)
  • Not recorded170 (3.2%)

Who was hurt

  • Car occupant5,032 (68%)
  • Pedestrian813 (11%)
  • Motorcyclist786 (11%)
  • Cyclist343 (4.6%)
  • Van occupant154 (2.1%)
  • Bus or coach occupant142 (1.9%)
  • Goods vehicle occupant (over 3.5 tonnes)73 (1%)
  • Other vehicle occupant41 (0.6%)
  • Minibus occupant34 (0.5%)
  • Taxi or private hire car occupant17 (0.2%)
  • Other4 (0.1%)
  • Not recorded1 (under 0.1%)

Source: Department for Transport, STATS19 road safety data

SA4 road accidents by year

Collisions and casualties in SA4, 1979 to 2025

Collisions in SA4 peaked at 171 in 1988; 2025 had 33.

  • Collisions
  • Collisions in 2025: 33
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20253347
20243138
20234257
20222933
20213444
20203749
20194259
20186885
20176685
201682104
201576102
201470104
201386132
201287136
201197143
2010108146
2009119174
2008120169
2007121176
2006164241
2005160227
2004158218
2003136194
2002129176
2001142195
2000122169
1999136190
1998146216
1997147207
1996159224
1995155227
1994132172
1993139207
1992145192
1991121166
1990136182
1989167241
1988171230
1987139205
1986114160
1985144199
1984124163
1983122148
1982157239
1981132174
1980135196
1979147199

Map of recent crashes in SA4

Map of the 24 most recent crashes in SA4

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 SA4

The 24 most recent collisions in SA4 happened between 20 April and 28 December 2025.

Severity

Crashes by road in SA4

The A48 has the most collisions in SA4, 802 of 5,327 (15%), followed by the M4 (563).

Collisions in SA4 on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA488021,12310120
2ndM45638921779
3rdA4844476401576
4thB42964235991055
5thB42953364891457
6thA483229330318
7thA4240214288317
8thA4138209314163
9thA4070155217123
10thB4620587919
11thB43064366116
12thB42973262312
13thB4260162801
14thB42064500
15thA4703401
16thA48(M)3301
17thB41383400
18thB44893401

Council areas covering SA4

Collisions in SA4 were recorded in 2 council areas. Swansea has 4,407 of 5,327 (83%).

Collisions in SA4 by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stSwansea4,4076,08376515
2ndCarmarthenshire9181,35521200

Towns in SA4

Collisions in SA4 were recorded in 6 towns, led by Gorseinon (981) and Gowerton and Waunarlwydd (374).