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CrashStats

A4048 accidents: crash map and statistics

Police recorded 1,312 collisions on the A4048 from 1979 to 2025, with 1,882 casualties. Of those crashes, 32 were fatal and 289 serious, and 35 people were killed.

In 2025 there were 2 collisions on the A4048, down 60% from 5 in 2024, with 2 casualties.

Collisions since 1979
1,312
845th highest of 4,923 roads
Casualties
1,882
1.43 per collision
Fatal collisions
32
35 people killed
Serious collisions
289
350 seriously injured
Collisions in 2025
2
Down 60% on 2024
Casualties in 2025
2
Down 67% on 2024

Crash severity on the A4048

On the A4048, 2.4% of collisions were fatal and 22% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal322.4%
  • Serious28922%
  • Slight99176%

Where the A4048 ranks among 4,923 roads

Most collisions
845th
Most casualties
795th
Most fatal collisions
640th
Most serious collisions
746th

A4048 accidents by year

Collisions on the A4048 peaked at 59 in 1979 and were down to 2 in 2025.

Collisions and casualties on the A4048, 1979 to 2025

  • Collisions
  • Collisions in 2025: 2
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202522
202456
202347
2022811
2021610
202069
2019610
201858
201744
2016314
2015710
2014810
20131115
2012811
2011513
201045
20091424
20081840
20071522
20061531
20053037
20043243
20032851
20023140
20013655
20003664
19994468
19984365
19973763
19965278
19954268
19945082
19933846
19923554
19914058
19905263
19894554
19884263
19875368
19864252
19854761
19845060
19835267
19824973
19814856
19804562
19795969

When crashes happen on the A4048

Friday has the most collisions on the A4048 (224), and 3pm to 6pm is the busiest time of day (297).

Collisions by day of the week

  • Monday174 (13%)
  • Tuesday172 (13%)
  • Wednesday200 (15%)
  • Thursday214 (16%)
  • Friday224 (17%)
  • Saturday202 (15%)
  • Sunday126 (9.6%)

Collisions by time of day

  • Midnight to 3am49 (3.7%)
  • 3am to 6am15 (1.1%)
  • 6am to 9am107 (8.2%)
  • 9am to noon205 (16%)
  • Noon to 3pm224 (17%)
  • 3pm to 6pm297 (23%)
  • 6pm to 9pm202 (15%)
  • 9pm to midnight213 (16%)

Collisions by month

  • January100 (7.6%)
  • February95 (7.2%)
  • March112 (8.5%)
  • April118 (9%)
  • May100 (7.6%)
  • June102 (7.8%)
  • July93 (7.1%)
  • August109 (8.3%)
  • September102 (7.8%)
  • October126 (9.6%)
  • November127 (9.7%)
  • December128 (9.8%)

Light conditions at the time

  • Daylight868 (66%)
  • Dark, street lights lit398 (30%)
  • Dark, lighting unknown20 (1.5%)
  • Dark, street lights unlit13 (1%)
  • Dark, no street lighting12 (0.9%)
  • Not recorded1 (0.1%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A4048 crashes

On the A4048, 61% of collisions happened where the speed limit was 30 mph and 60% on a dry road surface.

Speed limit at the scene

  • 30 mph802 (61%)
  • 40 mph230 (18%)
  • 50 mph84 (6.4%)
  • 60 mph194 (15%)
  • 70 mph2 (0.2%)

Weather at the time

  • Fine, no high winds942 (72%)
  • Raining, no high winds221 (17%)
  • Raining with high winds47 (3.6%)
  • Fine with high winds18 (1.4%)
  • Other79 (6%)
  • Not recorded5 (0.4%)

Road surface

  • Dry786 (60%)
  • Wet or damp483 (37%)
  • Frost or ice35 (2.7%)
  • Snow7 (0.5%)
  • Not recorded1 (0.1%)

Type of road

  • Single carriageway1,211 (92%)
  • Roundabout70 (5.3%)
  • Dual carriageway23 (1.8%)
  • One way street or slip road5 (0.4%)
  • Not recorded3 (0.2%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A4048 crashes

Car occupants make up 62% of the people killed or injured on the A4048, followed by pedestrians (20%).

Casualties by road user

  • Car occupant1,172 (62%)
  • Pedestrian373 (20%)
  • Motorcyclist162 (8.6%)
  • Cyclist49 (2.6%)
  • Bus or coach occupant46 (2.4%)
  • Van occupant22 (1.2%)
  • Goods vehicle occupant (over 3.5 tonnes)18 (1%)
  • Other40 (2.1%)

Vehicles involved

  • Car1,707 (78%)
  • Motorcycle171 (7.8%)
  • Bus or coach68 (3.1%)
  • Van or goods vehicle up to 3.5 tonnes66 (3%)
  • Goods vehicle over 3.5 tonnes55 (2.5%)
  • Pedal cycle52 (2.4%)
  • Other vehicle23 (1.1%)
  • Other40 (1.8%)

Casualties by age

  • 0 to 546 (2.4%)
  • 6 to 1068 (3.6%)
  • 11 to 15136 (7.2%)
  • 16 to 20457 (24%)
  • 21 to 25259 (14%)
  • 26 to 35294 (16%)
  • 36 to 45211 (11%)
  • 46 to 55150 (8%)
  • 56 to 65109 (5.8%)
  • 66 to 7599 (5.3%)
  • Over 7549 (2.6%)
  • Not recorded4 (0.2%)

Drivers, passengers and pedestrians

  • Driver or rider916 (49%)
  • Passenger593 (32%)
  • Pedestrian373 (20%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A4048

Map of the 25 most recent crashes on the A4048

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

A4048 crashes by council area

Collisions on the A4048 were recorded in 2 council areas. Caerphilly has the most, with 954, followed by Blaenau Gwent (352).

Collisions on the A4048 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stCaerphilly9541,37724203
2ndBlaenau Gwent352494785

A4048 crashes by town

Collisions on the A4048 were recorded in 4 towns and built-up areas, led by Blackwood (299) and Tredegar (190).

Recent crashes on the A4048

These are the 25 most recent collisions on the A4048, from 18 January 2021 to 14 November 2025.

Severity