Skip to main content
CrashStats

A4050 accidents: crash map and statistics

Police recorded 641 collisions on the A4050 from 1979 to 2025, with 902 casualties. Of those crashes, 15 were fatal and 105 serious, and 18 people were killed.

In 2025 there were 7 collisions on the A4050, up 75% from 4 in 2024, with 8 casualties.

Collisions since 1979
641
1,612th highest of 4,923 roads
Casualties
902
1.41 per collision
Fatal collisions
15
18 people killed
Serious collisions
105
130 seriously injured
Collisions in 2025
7
Up 75% on 2024
Casualties in 2025
8
Up 33% on 2024

Crash severity on the A4050

On the A4050, 2.3% of collisions were fatal and 16% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal152.3%
  • Serious10516%
  • Slight52181%

Where the A4050 ranks among 4,923 roads

Most collisions
1,612th
Most casualties
1,550th
Most fatal collisions
1,258th
Most serious collisions
1,833rd

A4050 accidents by year

Collisions on the A4050 peaked at 35 in 1983 and were down to 7 in 2025.

Collisions and casualties on the A4050, 1979 to 2025

  • Collisions
  • Collisions in 2025: 7
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202578
202446
2023912
202269
202100
20201417
20191214
20181016
20171621
20161225
20151723
2014911
20131521
20121317
20111620
20101114
20091120
20081115
20071114
20062030
20051626
20041926
20032030
20021214
20011218
20002024
199945
199844
1997710
1996612
19951227
19941624
19931422
1992713
19911927
19901012
19891415
19882130
19872124
19861821
198588
19842638
19833545
19822136
19811519
19802031
19792028

When crashes happen on the A4050

Wednesday has the most collisions on the A4050 (112), and 3pm to 6pm is the busiest time of day (175).

Collisions by day of the week

  • Monday94 (15%)
  • Tuesday103 (16%)
  • Wednesday112 (17%)
  • Thursday77 (12%)
  • Friday96 (15%)
  • Saturday80 (12%)
  • Sunday79 (12%)

Collisions by time of day

  • Midnight to 3am25 (3.9%)
  • 3am to 6am8 (1.2%)
  • 6am to 9am89 (14%)
  • 9am to noon99 (15%)
  • Noon to 3pm102 (16%)
  • 3pm to 6pm175 (27%)
  • 6pm to 9pm95 (15%)
  • 9pm to midnight48 (7.5%)

Collisions by month

  • January47 (7.3%)
  • February44 (6.9%)
  • March50 (7.8%)
  • April65 (10%)
  • May58 (9%)
  • June56 (8.7%)
  • July48 (7.5%)
  • August49 (7.6%)
  • September52 (8.1%)
  • October54 (8.4%)
  • November67 (10%)
  • December51 (8%)

Light conditions at the time

  • Daylight486 (76%)
  • Dark, street lights lit133 (21%)
  • Dark, lighting unknown9 (1.4%)
  • Dark, no street lighting7 (1.1%)
  • Dark, street lights unlit4 (0.6%)
  • Not recorded2 (0.3%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A4050 crashes

On the A4050, 38% of collisions happened where the speed limit was 30 mph and 70% on a dry road surface.

Speed limit at the scene

  • 20 mph7 (1.1%)
  • 30 mph246 (38%)
  • 40 mph152 (24%)
  • 50 mph208 (32%)
  • 60 mph27 (4.2%)
  • 70 mph1 (0.2%)

Weather at the time

  • Fine, no high winds502 (78%)
  • Raining, no high winds98 (15%)
  • Fine with high winds11 (1.7%)
  • Raining with high winds6 (0.9%)
  • Other15 (2.3%)
  • Not recorded9 (1.4%)

Road surface

  • Dry449 (70%)
  • Wet or damp179 (28%)
  • Frost or ice5 (0.8%)
  • Snow5 (0.8%)
  • Flood over 3cm deep1 (0.2%)
  • Not recorded2 (0.3%)

Type of road

  • Single carriageway486 (76%)
  • Roundabout122 (19%)
  • Dual carriageway28 (4.4%)
  • One way street or slip road1 (0.2%)
  • Not recorded4 (0.6%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A4050 crashes

Car occupants make up 66% of the people killed or injured on the A4050, followed by motorcyclists (13%).

Casualties by road user

  • Car occupant592 (66%)
  • Motorcyclist115 (13%)
  • Pedestrian79 (8.8%)
  • Cyclist45 (5%)
  • Van occupant28 (3.1%)
  • Bus or coach occupant19 (2.1%)
  • Goods vehicle occupant (over 3.5 tonnes)7 (0.8%)
  • Other17 (1.9%)

Vehicles involved

  • Car937 (76%)
  • Motorcycle107 (8.7%)
  • Van or goods vehicle up to 3.5 tonnes56 (4.6%)
  • Pedal cycle45 (3.7%)
  • Goods vehicle over 3.5 tonnes33 (2.7%)
  • Bus or coach16 (1.3%)
  • Other29 (2.4%)
  • Not recorded3 (0.2%)

Casualties by age

  • 0 to 519 (2.1%)
  • 6 to 1042 (4.7%)
  • 11 to 1552 (5.8%)
  • 16 to 20175 (19%)
  • 21 to 25117 (13%)
  • 26 to 35165 (18%)
  • 36 to 45114 (13%)
  • 46 to 5585 (9.4%)
  • 56 to 6557 (6.3%)
  • 66 to 7546 (5.1%)
  • Over 7528 (3.1%)
  • Not recorded2 (0.2%)

Drivers, passengers and pedestrians

  • Driver or rider547 (61%)
  • Passenger276 (31%)
  • Pedestrian79 (8.8%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A4050

Map of the 25 most recent crashes on the A4050

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

A4050 crashes by council area

Collisions on the A4050 were recorded in 2 council areas. Vale of Glamorgan has the most, with 626, followed by Cardiff (13).

Collisions on the A4050 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stVale of Glamorgan62688215104
2ndCardiff131801

A4050 crashes by town

Collisions on the A4050 were recorded in 3 towns and built-up areas, led by Barry, Vale of Glamorgan (306) and Wenvoe (72).

Recent crashes on the A4050

These are the 25 most recent collisions on the A4050, from 15 February 2022 to 4 December 2025.

Severity