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CrashStats

A484 accidents: crash map and statistics

Police recorded 3,787 collisions on the A484 from 1979 to 2025, with 5,487 casualties. Of those crashes, 102 were fatal and 1,017 serious, and 113 people were killed.

In 2025 there were 41 collisions on the A484, up 46% from 28 in 2024, with 60 casualties.

Collisions since 1979
3,787
293rd highest of 4,923 roads
Casualties
5,487
1.45 per collision
Fatal collisions
102
113 people killed
Serious collisions
1,017
1,357 seriously injured
Collisions in 2025
41
Up 46% on 2024
Casualties in 2025
60
Up 62% on 2024

Crash severity on the A484

On the A484, 2.7% of collisions were fatal and 27% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal1022.7%
  • Serious1,01727%
  • Slight2,66870%

Where the A484 ranks among 4,923 roads

Most collisions
293rd
Most casualties
271st
Most fatal collisions
201st
Most serious collisions
189th

A484 accidents by year

Collisions on the A484 peaked at 140 in 1979 and were down to 41 in 2025.

Collisions and casualties on the A484, 1979 to 2025

  • Collisions
  • Collisions in 2025: 41
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20254160
20242837
20233543
20223348
20214652
20202529
20194463
20185274
20174652
20165566
20157192
20146087
20135682
20125586
20116195
201068104
20096397
20086996
200779113
20066395
200566106
200482119
200381130
200281111
20017691
200081134
199980124
199878129
199777134
199697131
199581122
199493146
199396135
1992103155
1991112160
1990111176
1989116167
1988119167
1987122162
1986124191
1985108152
1984124180
1983124167
1982129181
1981120170
1980116176
1979140200

When crashes happen on the A484

Friday has the most collisions on the A484 (603), and 3pm to 6pm is the busiest time of day (988).

Collisions by day of the week

  • Monday534 (14%)
  • Tuesday530 (14%)
  • Wednesday523 (14%)
  • Thursday567 (15%)
  • Friday603 (16%)
  • Saturday590 (16%)
  • Sunday440 (12%)

Collisions by time of day

  • Midnight to 3am169 (4.5%)
  • 3am to 6am66 (1.7%)
  • 6am to 9am423 (11%)
  • 9am to noon552 (15%)
  • Noon to 3pm694 (18%)
  • 3pm to 6pm988 (26%)
  • 6pm to 9pm568 (15%)
  • 9pm to midnight327 (8.6%)

Collisions by month

  • January280 (7.4%)
  • February293 (7.7%)
  • March315 (8.3%)
  • April284 (7.5%)
  • May282 (7.4%)
  • June288 (7.6%)
  • July307 (8.1%)
  • August322 (8.5%)
  • September356 (9.4%)
  • October336 (8.9%)
  • November373 (9.8%)
  • December351 (9.3%)

Light conditions at the time

  • Daylight2,697 (71%)
  • Dark, street lights lit666 (18%)
  • Dark, no street lighting348 (9.2%)
  • Dark, street lights unlit35 (0.9%)
  • Dark, lighting unknown29 (0.8%)
  • Not recorded12 (0.3%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A484 crashes

On the A484, 55% of collisions happened where the speed limit was 30 mph and 60% on a dry road surface.

Speed limit at the scene

  • 20 mph21 (0.6%)
  • 30 mph2,068 (55%)
  • 40 mph392 (10%)
  • 50 mph75 (2%)
  • 60 mph1,221 (32%)
  • 70 mph9 (0.2%)
  • Not recorded1 (under 0.1%)

Weather at the time

  • Fine, no high winds2,679 (71%)
  • Raining, no high winds685 (18%)
  • Raining with high winds135 (3.6%)
  • Fine with high winds61 (1.6%)
  • Other176 (4.6%)
  • Not recorded51 (1.3%)

Road surface

  • Dry2,259 (60%)
  • Wet or damp1,410 (37%)
  • Frost or ice80 (2.1%)
  • Snow15 (0.4%)
  • Other10 (0.3%)
  • Not recorded13 (0.3%)

Type of road

  • Single carriageway3,181 (84%)
  • Roundabout376 (9.9%)
  • Dual carriageway123 (3.2%)
  • One way street or slip road95 (2.5%)
  • Not recorded12 (0.3%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A484 crashes

Car occupants make up 68% of the people killed or injured on the A484, followed by pedestrians (10%).

Casualties by road user

  • Car occupant3,734 (68%)
  • Pedestrian569 (10%)
  • Motorcyclist561 (10%)
  • Cyclist213 (3.9%)
  • Van occupant147 (2.7%)
  • Bus or coach occupant87 (1.6%)
  • Goods vehicle occupant (over 3.5 tonnes)76 (1.4%)
  • Other100 (1.8%)

Vehicles involved

  • Car5,275 (76%)
  • Motorcycle574 (8.2%)
  • Van or goods vehicle up to 3.5 tonnes319 (4.6%)
  • Goods vehicle over 3.5 tonnes264 (3.8%)
  • Pedal cycle221 (3.2%)
  • Bus or coach126 (1.8%)
  • Other189 (2.7%)
  • Not recorded3 (under 0.1%)

Casualties by age

  • 0 to 5106 (1.9%)
  • 6 to 10169 (3.1%)
  • 11 to 15252 (4.6%)
  • 16 to 201,037 (19%)
  • 21 to 25729 (13%)
  • 26 to 35961 (18%)
  • 36 to 45704 (13%)
  • 46 to 55558 (10%)
  • 56 to 65436 (7.9%)
  • 66 to 75324 (5.9%)
  • Over 75202 (3.7%)
  • Not recorded9 (0.2%)

Drivers, passengers and pedestrians

  • Driver or rider3,232 (59%)
  • Passenger1,686 (31%)
  • Pedestrian569 (10%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A484

Map of the 25 most recent crashes on the A484

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

A484 crashes by council area

Collisions on the A484 were recorded in 5 council areas. Carmarthenshire has the most, with 3,011, followed by Swansea (484) and Ceredigion (281).

Collisions on the A484 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stCarmarthenshire3,0114,34278847
2ndSwansea4846981677
3rdCeredigion281434892
4thNeath Port Talbot5600
5thPembrokeshire3400

A484 crashes by town

Collisions on the A484 were recorded in 13 towns and built-up areas, led by Llanelli (1,017) and Burry Port (153).

Recent crashes on the A484

These are the 25 most recent collisions on the A484, from 6 June to 19 December 2025.

Severity