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CrashStats

B4276 accidents: crash map and statistics

Police recorded 189 collisions on the B4276 from 1979 to 2025, with 288 casualties. Of those crashes, 1 was fatal and 37 serious, and 1 person was killed.

In 2025 there was 1 collision on the B4276, level with 2024, with 1 casualty.

Collisions since 1979
189
3,305th highest of 4,923 roads
Casualties
288
1.52 per collision
Fatal collisions
1
1 person killed
Serious collisions
37
52 seriously injured
Collisions in 2025
1
Level with 2024
Casualties in 2025
1
Level with 2024

Crash severity on the B4276

On the B4276, 0.5% of collisions were fatal and 20% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal10.5%
  • Serious3720%
  • Slight15180%

Where the B4276 ranks among 4,923 roads

Most collisions
3,305th
Most casualties
3,176th
Most fatal collisions
3,933rd
Most serious collisions
3,385th

B4276 accidents by year

Collisions on the B4276 peaked at 18 in 1983 and were down to 1 in 2025.

Collisions and casualties on the B4276, 1979 to 2025

  • Collisions
  • Collisions in 2025: 1
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202511
202411
202322
2022610
202122
202022
201945
2018410
201733
201611
201522
201449
201339
201239
201157
201011
200922
200823
200737
200611
200535
2004611
200322
200212
200123
200012
199937
199823
199711
199656
199533
199445
199314
199259
1991911
1990712
198968
198867
1987610
1986711
198544
198477
19831828
198244
1981915
1980811
1979710

When crashes happen on the B4276

Friday has the most collisions on the B4276 (33), and 3pm to 6pm is the busiest time of day (39).

Collisions by day of the week

  • Monday26 (14%)
  • Tuesday28 (15%)
  • Wednesday27 (14%)
  • Thursday28 (15%)
  • Friday33 (17%)
  • Saturday28 (15%)
  • Sunday19 (10%)

Collisions by time of day

  • Midnight to 3am11 (5.8%)
  • 3am to 6am6 (3.2%)
  • 6am to 9am21 (11%)
  • 9am to noon30 (16%)
  • Noon to 3pm34 (18%)
  • 3pm to 6pm39 (21%)
  • 6pm to 9pm24 (13%)
  • 9pm to midnight24 (13%)

Collisions by month

  • January16 (8.5%)
  • February15 (7.9%)
  • March23 (12%)
  • April17 (9%)
  • May8 (4.2%)
  • June16 (8.5%)
  • July16 (8.5%)
  • August16 (8.5%)
  • September11 (5.8%)
  • October19 (10%)
  • November17 (9%)
  • December15 (7.9%)

Light conditions at the time

  • Daylight131 (69%)
  • Dark, street lights lit29 (15%)
  • Dark, no street lighting24 (13%)
  • Dark, lighting unknown3 (1.6%)
  • Dark, street lights unlit2 (1.1%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B4276 crashes

On the B4276, 58% of collisions happened where the speed limit was 30 mph and 55% on a dry road surface.

Speed limit at the scene

  • 20 mph2 (1.1%)
  • 30 mph109 (58%)
  • 40 mph20 (11%)
  • 50 mph3 (1.6%)
  • 60 mph55 (29%)

Weather at the time

  • Fine, no high winds130 (69%)
  • Raining, no high winds36 (19%)
  • Raining with high winds13 (6.9%)
  • Fog or mist4 (2.1%)
  • Other5 (2.6%)
  • Not recorded1 (0.5%)

Road surface

  • Dry104 (55%)
  • Wet or damp66 (35%)
  • Frost or ice16 (8.5%)
  • Flood over 3cm deep3 (1.6%)

Type of road

  • Single carriageway182 (96%)
  • Roundabout3 (1.6%)
  • Dual carriageway2 (1.1%)
  • One way street or slip road1 (0.5%)
  • Not recorded1 (0.5%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B4276 crashes

Car occupants make up 75% of the people killed or injured on the B4276, followed by pedestrians (8.7%).

Casualties by road user

  • Car occupant217 (75%)
  • Pedestrian25 (8.7%)
  • Motorcyclist20 (6.9%)
  • Bus or coach occupant6 (2.1%)
  • Goods vehicle occupant (over 3.5 tonnes)5 (1.7%)
  • Other vehicle occupant5 (1.7%)
  • Van occupant5 (1.7%)
  • Other5 (1.7%)

Vehicles involved

  • Car250 (79%)
  • Motorcycle17 (5.4%)
  • Van or goods vehicle up to 3.5 tonnes17 (5.4%)
  • Goods vehicle over 3.5 tonnes15 (4.7%)
  • Bus or coach6 (1.9%)
  • Other vehicle6 (1.9%)
  • Pedal cycle2 (0.6%)
  • Other4 (1.3%)

Casualties by age

  • 0 to 56 (2.1%)
  • 6 to 1012 (4.2%)
  • 11 to 1512 (4.2%)
  • 16 to 2046 (16%)
  • 21 to 2551 (18%)
  • 26 to 3562 (22%)
  • 36 to 4534 (12%)
  • 46 to 5535 (12%)
  • 56 to 6515 (5.2%)
  • 66 to 759 (3.1%)
  • Over 756 (2.1%)

Drivers, passengers and pedestrians

  • Driver or rider163 (57%)
  • Passenger100 (35%)
  • Pedestrian25 (8.7%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B4276

Map of the 25 most recent crashes on the B4276

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

  • 25 crashes
  • Slight

B4276 crashes by council area

Collisions on the B4276 were recorded in 2 council areas. Rhondda Cynon Taf has the most, with 170, followed by Merthyr Tydfil (17).

Collisions on the B4276 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stRhondda Cynon Taf170259033
2ndMerthyr Tydfil172514

B4276 crashes by town

Of the 189 collisions on the B4276, 92 were in the built-up area of Aberdare.

Recent crashes on the B4276

These are the 25 most recent collisions on the B4276, from 25 January 2017 to 25 October 2025.