Skip to main content
CrashStats

B4273 accidents: crash map and statistics

Police recorded 408 collisions on the B4273 from 1979 to 2025, with 547 casualties. Of those crashes, 9 were fatal and 60 serious, and 10 people were killed.

In 2025 there were 2 collisions on the B4273, up 100% from 1 in 2024, with 3 casualties.

Collisions since 1979
408
2,276th highest of 4,923 roads
Casualties
547
1.34 per collision
Fatal collisions
9
10 people killed
Serious collisions
60
69 seriously injured
Collisions in 2025
2
Up 100% on 2024
Casualties in 2025
3
Up 200% on 2024

Crash severity on the B4273

On the B4273, 2.2% of collisions were fatal and 15% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal92.2%
  • Serious6015%
  • Slight33983%

Where the B4273 ranks among 4,923 roads

Most collisions
2,276th
Most casualties
2,287th
Most fatal collisions
1,807th
Most serious collisions
2,705th

B4273 accidents by year

Collisions on the B4273 peaked at 24 in 1988 and were down to 2 in 2025.

Collisions and casualties on the B4273, 1979 to 2025

  • Collisions
  • Collisions in 2025: 2
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202523
202411
202338
202211
202144
202023
201933
201857
201767
201635
201511
201477
201345
201222
201100
201058
200945
200845
200744
20061013
2005615
20041218
20031021
20021014
20011117
200044
1999513
1998910
19971223
1996912
19951223
199459
199344
19921214
19911518
19901623
19892332
19882430
19871416
19861717
19851721
19841620
19831414
19821717
19811518
19801619
19791213

When crashes happen on the B4273

Friday has the most collisions on the B4273 (75), and 3pm to 6pm is the busiest time of day (90).

Collisions by day of the week

  • Monday51 (13%)
  • Tuesday45 (11%)
  • Wednesday50 (12%)
  • Thursday69 (17%)
  • Friday75 (18%)
  • Saturday70 (17%)
  • Sunday48 (12%)

Collisions by time of day

  • Midnight to 3am24 (5.9%)
  • 3am to 6am4 (1%)
  • 6am to 9am35 (8.6%)
  • 9am to noon65 (16%)
  • Noon to 3pm83 (20%)
  • 3pm to 6pm90 (22%)
  • 6pm to 9pm62 (15%)
  • 9pm to midnight45 (11%)

Collisions by month

  • January47 (12%)
  • February36 (8.8%)
  • March37 (9.1%)
  • April27 (6.6%)
  • May29 (7.1%)
  • June32 (7.8%)
  • July28 (6.9%)
  • August25 (6.1%)
  • September32 (7.8%)
  • October34 (8.3%)
  • November42 (10%)
  • December39 (9.6%)

Light conditions at the time

  • Daylight278 (68%)
  • Dark, street lights lit102 (25%)
  • Dark, no street lighting8 (2%)
  • Dark, street lights unlit8 (2%)
  • Dark, lighting unknown5 (1.2%)
  • Not recorded7 (1.7%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B4273 crashes

On the B4273, 75% of collisions happened where the speed limit was 30 mph and 63% on a dry road surface.

Speed limit at the scene

  • 20 mph3 (0.7%)
  • 30 mph305 (75%)
  • 40 mph60 (15%)
  • 50 mph36 (8.8%)
  • 60 mph4 (1%)

Weather at the time

  • Fine, no high winds322 (79%)
  • Raining, no high winds56 (14%)
  • Raining with high winds9 (2.2%)
  • Fine with high winds5 (1.2%)
  • Other8 (2%)
  • Not recorded8 (2%)

Road surface

  • Dry256 (63%)
  • Wet or damp129 (32%)
  • Frost or ice14 (3.4%)
  • Flood over 3cm deep1 (0.2%)
  • Snow1 (0.2%)
  • Not recorded7 (1.7%)

Type of road

  • Single carriageway323 (79%)
  • One way street or slip road71 (17%)
  • Roundabout8 (2%)
  • Dual carriageway4 (1%)
  • Not recorded2 (0.5%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B4273 crashes

Car occupants make up 55% of the people killed or injured on the B4273, followed by pedestrians (23%).

Casualties by road user

  • Car occupant303 (55%)
  • Pedestrian126 (23%)
  • Bus or coach occupant53 (9.7%)
  • Motorcyclist36 (6.6%)
  • Cyclist14 (2.6%)
  • Other vehicle occupant4 (0.7%)
  • Minibus occupant3 (0.5%)
  • Other8 (1.5%)

Vehicles involved

  • Car470 (73%)
  • Bus or coach75 (12%)
  • Motorcycle40 (6.2%)
  • Van or goods vehicle up to 3.5 tonnes19 (3%)
  • Goods vehicle over 3.5 tonnes13 (2%)
  • Pedal cycle13 (2%)
  • Minibus5 (0.8%)
  • Other8 (1.2%)

Casualties by age

  • 0 to 59 (1.6%)
  • 6 to 1030 (5.5%)
  • 11 to 1544 (8%)
  • 16 to 20111 (20%)
  • 21 to 2577 (14%)
  • 26 to 35105 (19%)
  • 36 to 4557 (10%)
  • 46 to 5537 (6.8%)
  • 56 to 6544 (8%)
  • 66 to 7519 (3.5%)
  • Over 7513 (2.4%)
  • Not recorded1 (0.2%)

Drivers, passengers and pedestrians

  • Driver or rider245 (45%)
  • Passenger176 (32%)
  • Pedestrian126 (23%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B4273

Map of the 25 most recent crashes on the B4273

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

B4273 crashes by council area

All 408 collisions on the B4273 were in Rhondda Cynon Taf.

Collisions on the B4273 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stRhondda Cynon Taf408547960

B4273 crashes by town

Collisions on the B4273 were recorded in 2 towns and built-up areas, led by Pontypridd (179) and Ynysybwl (102).

Recent crashes on the B4273

These are the 25 most recent collisions on the B4273, from 27 February 2017 to 24 June 2025.

Severity