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CrashStats

A4046 accidents: crash map and statistics

Police recorded 784 collisions on the A4046 from 1979 to 2025, with 1,137 casualties. Of those crashes, 17 were fatal and 160 serious, and 17 people were killed.

In 2025 there were 3 collisions on the A4046, down 25% from 4 in 2024, with 4 casualties.

Collisions since 1979
784
1,365th highest of 4,923 roads
Casualties
1,137
1.45 per collision
Fatal collisions
17
17 people killed
Serious collisions
160
189 seriously injured
Collisions in 2025
3
Down 25% on 2024
Casualties in 2025
4
Down 50% on 2024

Crash severity on the A4046

On the A4046, 2.2% of collisions were fatal and 20% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal172.2%
  • Serious16020%
  • Slight60777%

Where the A4046 ranks among 4,923 roads

Most collisions
1,365th
Most casualties
1,280th
Most fatal collisions
1,125th
Most serious collisions
1,297th

A4046 accidents by year

Collisions on the A4046 peaked at 33 in 1990 and were down to 3 in 2025.

Collisions and casualties on the A4046, 1979 to 2025

  • Collisions
  • Collisions in 2025: 3
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202534
202448
202379
2022811
2021813
202023
2019915
201856
201726
201622
201522
2014818
20131224
20121217
2011712
20101013
20091013
20081425
20071635
20063151
20052642
20042331
20031924
20022142
20012430
20002237
19991929
19982843
19972535
19962732
19952330
19942028
19931926
19922226
19912835
19903357
19892430
19882024
19871316
19862640
19851922
19841821
19832529
19822028
19812235
19802631
19792027

When crashes happen on the A4046

Friday has the most collisions on the A4046 (133), and 3pm to 6pm is the busiest time of day (199).

Collisions by day of the week

  • Monday97 (12%)
  • Tuesday125 (16%)
  • Wednesday115 (15%)
  • Thursday119 (15%)
  • Friday133 (17%)
  • Saturday108 (14%)
  • Sunday87 (11%)

Collisions by time of day

  • Midnight to 3am23 (2.9%)
  • 3am to 6am16 (2%)
  • 6am to 9am68 (8.7%)
  • 9am to noon112 (14%)
  • Noon to 3pm161 (21%)
  • 3pm to 6pm199 (25%)
  • 6pm to 9pm108 (14%)
  • 9pm to midnight97 (12%)

Collisions by month

  • January63 (8%)
  • February64 (8.2%)
  • March68 (8.7%)
  • April71 (9.1%)
  • May54 (6.9%)
  • June66 (8.4%)
  • July59 (7.5%)
  • August54 (6.9%)
  • September66 (8.4%)
  • October68 (8.7%)
  • November81 (10%)
  • December70 (8.9%)

Light conditions at the time

  • Daylight556 (71%)
  • Dark, street lights lit184 (23%)
  • Dark, no street lighting25 (3.2%)
  • Dark, lighting unknown10 (1.3%)
  • Dark, street lights unlit9 (1.1%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A4046 crashes

On the A4046, 63% of collisions happened where the speed limit was 30 mph and 59% on a dry road surface.

Speed limit at the scene

  • 20 mph1 (0.1%)
  • 30 mph490 (63%)
  • 40 mph147 (19%)
  • 50 mph1 (0.1%)
  • 60 mph139 (18%)
  • 70 mph6 (0.8%)

Weather at the time

  • Fine, no high winds571 (73%)
  • Raining, no high winds136 (17%)
  • Raining with high winds25 (3.2%)
  • Fine with high winds9 (1.1%)
  • Other38 (4.8%)
  • Not recorded5 (0.6%)

Road surface

  • Dry460 (59%)
  • Wet or damp290 (37%)
  • Frost or ice21 (2.7%)
  • Snow11 (1.4%)
  • Flood over 3cm deep2 (0.3%)

Type of road

  • Single carriageway703 (90%)
  • Roundabout59 (7.5%)
  • Dual carriageway12 (1.5%)
  • One way street or slip road9 (1.1%)
  • Not recorded1 (0.1%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A4046 crashes

Car occupants make up 67% of the people killed or injured on the A4046, followed by pedestrians (13%).

Casualties by road user

  • Car occupant761 (67%)
  • Pedestrian152 (13%)
  • Motorcyclist98 (8.6%)
  • Cyclist37 (3.3%)
  • Bus or coach occupant33 (2.9%)
  • Van occupant20 (1.8%)
  • Goods vehicle occupant (over 3.5 tonnes)16 (1.4%)
  • Other20 (1.8%)

Vehicles involved

  • Car1,049 (78%)
  • Motorcycle94 (7%)
  • Bus or coach48 (3.6%)
  • Goods vehicle over 3.5 tonnes43 (3.2%)
  • Van or goods vehicle up to 3.5 tonnes39 (2.9%)
  • Pedal cycle36 (2.7%)
  • Minibus17 (1.3%)
  • Other23 (1.7%)

Casualties by age

  • 0 to 523 (2%)
  • 6 to 1027 (2.4%)
  • 11 to 1577 (6.8%)
  • 16 to 20229 (20%)
  • 21 to 25159 (14%)
  • 26 to 35197 (17%)
  • 36 to 45158 (14%)
  • 46 to 5594 (8.3%)
  • 56 to 6579 (6.9%)
  • 66 to 7557 (5%)
  • Over 7535 (3.1%)
  • Not recorded2 (0.2%)

Drivers, passengers and pedestrians

  • Driver or rider633 (56%)
  • Passenger352 (31%)
  • Pedestrian152 (13%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A4046

Map of the 25 most recent crashes on the A4046

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

  • 25 crashes
  • Serious
  • Slight

A4046 crashes by council area

Collisions on the A4046 were recorded in 3 council areas. Blaenau Gwent has the most, with 774, followed by Caerphilly (3) and Monmouthshire (3).

Collisions on the A4046 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stBlaenau Gwent7741,11617158
2ndCaerphilly3602
3rdMonmouthshire3400

A4046 crashes by town

Collisions on the A4046 were recorded in 2 towns and built-up areas, led by Ebbw Vale (316) and Cwm (93).

Recent crashes on the A4046

These are the 25 most recent collisions on the A4046, from 13 June 2021 to 20 December 2025.

Severity