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CrashStats

A4058 accidents: crash map and statistics

Police recorded 2,063 collisions on the A4058 from 1979 to 2025, with 2,821 casualties. Of those crashes, 49 were fatal and 305 serious, and 54 people were killed.

In 2025 there were 12 collisions on the A4058, down 14% from 14 in 2024, with 13 casualties.

Collisions since 1979
2,063
566th highest of 4,923 roads
Casualties
2,821
1.37 per collision
Fatal collisions
49
54 people killed
Serious collisions
305
353 seriously injured
Collisions in 2025
12
Down 14% on 2024
Casualties in 2025
13
Down 19% on 2024

Crash severity on the A4058

On the A4058, 2.4% of collisions were fatal and 15% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal492.4%
  • Serious30515%
  • Slight1,70983%

Where the A4058 ranks among 4,923 roads

Most collisions
566th
Most casualties
559th
Most fatal collisions
422nd
Most serious collisions
695th

A4058 accidents by year

Collisions on the A4058 peaked at 90 in 1989 and were down to 12 in 2025.

Collisions and casualties on the A4058, 1979 to 2025

  • Collisions
  • Collisions in 2025: 12
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20251213
20241416
20231323
20222131
20211619
20201727
20193042
20183044
20172529
20163954
20153347
20143036
20132737
20121523
20112135
20102138
20092030
20083650
20073047
20062328
20052947
20044164
20034156
20023959
20012847
20002847
19991923
19984372
19975996
19966194
19954864
19945282
19936176
19925880
19917695
19907791
198990111
19886997
198783110
19866982
19857389
19847089
19837796
19827492
19816590
198076102
197984101

When crashes happen on the A4058

Friday has the most collisions on the A4058 (359), and 3pm to 6pm is the busiest time of day (456).

Collisions by day of the week

  • Monday278 (13%)
  • Tuesday273 (13%)
  • Wednesday260 (13%)
  • Thursday315 (15%)
  • Friday359 (17%)
  • Saturday333 (16%)
  • Sunday245 (12%)

Collisions by time of day

  • Midnight to 3am114 (5.5%)
  • 3am to 6am35 (1.7%)
  • 6am to 9am160 (7.8%)
  • 9am to noon308 (15%)
  • Noon to 3pm370 (18%)
  • 3pm to 6pm456 (22%)
  • 6pm to 9pm326 (16%)
  • 9pm to midnight294 (14%)

Collisions by month

  • January149 (7.2%)
  • February149 (7.2%)
  • March178 (8.6%)
  • April156 (7.6%)
  • May187 (9.1%)
  • June143 (6.9%)
  • July162 (7.9%)
  • August157 (7.6%)
  • September211 (10%)
  • October205 (9.9%)
  • November187 (9.1%)
  • December179 (8.7%)

Light conditions at the time

  • Daylight1,348 (65%)
  • Dark, street lights lit623 (30%)
  • Dark, street lights unlit46 (2.2%)
  • Dark, no street lighting27 (1.3%)
  • Dark, lighting unknown11 (0.5%)
  • Not recorded8 (0.4%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A4058 crashes

On the A4058, 90% of collisions happened where the speed limit was 30 mph and 66% on a dry road surface.

Speed limit at the scene

  • 20 mph15 (0.7%)
  • 30 mph1,852 (90%)
  • 40 mph174 (8.4%)
  • 50 mph4 (0.2%)
  • 60 mph17 (0.8%)
  • 70 mph1 (under 0.1%)

Weather at the time

  • Fine, no high winds1,600 (78%)
  • Raining, no high winds335 (16%)
  • Raining with high winds52 (2.5%)
  • Fine with high winds20 (1%)
  • Other38 (1.8%)
  • Not recorded18 (0.9%)

Road surface

  • Dry1,359 (66%)
  • Wet or damp666 (32%)
  • Frost or ice21 (1%)
  • Snow5 (0.2%)
  • Flood over 3cm deep4 (0.2%)
  • Not recorded8 (0.4%)

Type of road

  • Single carriageway1,765 (86%)
  • One way street or slip road137 (6.6%)
  • Dual carriageway109 (5.3%)
  • Roundabout48 (2.3%)
  • Not recorded4 (0.2%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A4058 crashes

Car occupants make up 53% of the people killed or injured on the A4058, followed by pedestrians (26%).

Casualties by road user

  • Car occupant1,498 (53%)
  • Pedestrian746 (26%)
  • Bus or coach occupant224 (7.9%)
  • Motorcyclist177 (6.3%)
  • Cyclist74 (2.6%)
  • Van occupant49 (1.7%)
  • Other52 (1.8%)
  • Not recorded1 (under 0.1%)

Vehicles involved

  • Car2,726 (78%)
  • Bus or coach191 (5.4%)
  • Motorcycle189 (5.4%)
  • Van or goods vehicle up to 3.5 tonnes176 (5%)
  • Goods vehicle over 3.5 tonnes82 (2.3%)
  • Pedal cycle73 (2.1%)
  • Other77 (2.2%)
  • Not recorded1 (under 0.1%)

Casualties by age

  • 0 to 565 (2.3%)
  • 6 to 10140 (5%)
  • 11 to 15191 (6.8%)
  • 16 to 20508 (18%)
  • 21 to 25346 (12%)
  • 26 to 35502 (18%)
  • 36 to 45351 (12%)
  • 46 to 55255 (9%)
  • 56 to 65231 (8.2%)
  • 66 to 75133 (4.7%)
  • Over 7598 (3.5%)
  • Not recorded1 (under 0.1%)

Drivers, passengers and pedestrians

  • Driver or rider1,246 (44%)
  • Passenger829 (29%)
  • Pedestrian746 (26%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A4058

Map of the 25 most recent crashes on the A4058

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

  • 25 crashes
  • Serious
  • Slight

A4058 crashes by council area

Collisions on the A4058 were recorded in 2 council areas. Rhondda Cynon Taf has the most, with 2,052, followed by South Gloucestershire (7).

Collisions on the A4058 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stRhondda Cynon Taf2,0522,80249301
2ndSouth Gloucestershire71402

A4058 crashes by town

Collisions on the A4058 were recorded in 6 towns and built-up areas, led by Rhondda (582) and Pontypridd (417).

Recent crashes on the A4058

These are the 25 most recent collisions on the A4058, from 1 March 2024 to 22 December 2025.

Severity