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CrashStats

B4459 accidents: crash map and statistics

Police recorded 129 collisions on the B4459 from 1979 to 2025, with 201 casualties. Of those crashes, 4 were fatal and 37 serious, and 4 people were killed.

In 2025 there were 4 collisions on the B4459, level with 2024, with 8 casualties.

Collisions since 1979
129
3,770th highest of 4,923 roads
Casualties
201
1.56 per collision
Fatal collisions
4
4 people killed
Serious collisions
37
44 seriously injured
Collisions in 2025
4
Level with 2024
Casualties in 2025
8
Up 14% on 2024

Crash severity on the B4459

On the B4459, 3.1% of collisions were fatal and 29% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal43.1%
  • Serious3729%
  • Slight8868%

Where the B4459 ranks among 4,923 roads

Most collisions
3,770th
Most casualties
3,617th
Most fatal collisions
2,815th
Most serious collisions
3,385th

B4459 accidents by year

Collisions on the B4459 peaked at 7 in 2007 and were down to 4 in 2025.

Collisions and casualties on the B4459, 1979 to 2025

  • Collisions
  • Collisions in 2025
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202548
202447
202323
202222
202133
202011
201911
201800
201728
201611
201557
201411
201346
201234
201122
201035
200959
200837
2007712
200613
200512
200422
2003715
200222
200134
200012
199934
199833
199722
199635
199500
199411
199345
199245
199123
199023
198956
198835
1987410
198646
198533
198423
198334
198256
198136
198011
197923

When crashes happen on the B4459

Friday has the most collisions on the B4459 (26), and 3pm to 6pm is the busiest time of day (40).

Collisions by day of the week

  • Monday18 (14%)
  • Tuesday19 (15%)
  • Wednesday15 (12%)
  • Thursday18 (14%)
  • Friday26 (20%)
  • Saturday19 (15%)
  • Sunday14 (11%)

Collisions by time of day

  • Midnight to 3am7 (5.4%)
  • 3am to 6am0 (0%)
  • 6am to 9am12 (9.3%)
  • 9am to noon33 (26%)
  • Noon to 3pm14 (11%)
  • 3pm to 6pm40 (31%)
  • 6pm to 9pm18 (14%)
  • 9pm to midnight5 (3.9%)

Collisions by month

  • January8 (6.2%)
  • February8 (6.2%)
  • March4 (3.1%)
  • April9 (7%)
  • May14 (11%)
  • June9 (7%)
  • July13 (10%)
  • August14 (11%)
  • September9 (7%)
  • October12 (9.3%)
  • November15 (12%)
  • December14 (11%)

Light conditions at the time

  • Daylight97 (75%)
  • Dark, no street lighting18 (14%)
  • Dark, street lights lit11 (8.5%)
  • Dark, street lights unlit1 (0.8%)
  • Not recorded2 (1.6%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B4459 crashes

On the B4459, 56% of collisions happened where the speed limit was 60 mph and 57% on a dry road surface.

Speed limit at the scene

  • 20 mph3 (2.3%)
  • 30 mph47 (36%)
  • 40 mph4 (3.1%)
  • 50 mph3 (2.3%)
  • 60 mph72 (56%)

Weather at the time

  • Fine, no high winds93 (72%)
  • Raining, no high winds20 (16%)
  • Raining with high winds6 (4.7%)
  • Fine with high winds2 (1.6%)
  • Other5 (3.9%)
  • Not recorded3 (2.3%)

Road surface

  • Dry74 (57%)
  • Wet or damp48 (37%)
  • Frost or ice2 (1.6%)
  • Flood over 3cm deep1 (0.8%)
  • Other2 (1.6%)
  • Not recorded2 (1.6%)

Type of road

  • Single carriageway128 (99%)
  • Dual carriageway1 (0.8%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B4459 crashes

Car occupants make up 69% of the people killed or injured on the B4459, followed by pedestrians (9%).

Casualties by road user

  • Car occupant139 (69%)
  • Pedestrian18 (9%)
  • Motorcyclist16 (8%)
  • Van occupant10 (5%)
  • Cyclist5 (2.5%)
  • Goods vehicle occupant (over 3.5 tonnes)4 (2%)
  • Minibus occupant4 (2%)
  • Other5 (2.5%)

Vehicles involved

  • Car175 (74%)
  • Van or goods vehicle up to 3.5 tonnes18 (7.7%)
  • Motorcycle14 (6%)
  • Goods vehicle over 3.5 tonnes12 (5.1%)
  • Pedal cycle5 (2.1%)
  • Agricultural vehicle4 (1.7%)
  • Bus or coach4 (1.7%)
  • Other3 (1.3%)

Casualties by age

  • 0 to 53 (1.5%)
  • 6 to 1011 (5.5%)
  • 11 to 1513 (6.5%)
  • 16 to 2036 (18%)
  • 21 to 2530 (15%)
  • 26 to 3526 (13%)
  • 36 to 4520 (10%)
  • 46 to 5521 (10%)
  • 56 to 6527 (13%)
  • 66 to 758 (4%)
  • Over 756 (3%)

Drivers, passengers and pedestrians

  • Driver or rider117 (58%)
  • Passenger66 (33%)
  • Pedestrian18 (9%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B4459

Map of the 25 most recent crashes on the B4459

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

B4459 crashes by council area

Collisions on the B4459 were recorded in 2 council areas. Carmarthenshire has the most, with 93, followed by Ceredigion (35).

Collisions on the B4459 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stCarmarthenshire93149427
2ndCeredigion3551010

Recent crashes on the B4459

These are the 25 most recent collisions on the B4459, from 9 January 2015 to 25 November 2025.

Severity