Skip to main content
CrashStats

B4306 accidents: crash map and statistics

Police recorded 286 collisions on the B4306 from 1979 to 2025, with 406 casualties. Of those crashes, 6 were fatal and 102 serious, and 6 people were killed.

In 2025 there were 2 collisions on the B4306, down 33% from 3 in 2024, with 2 casualties.

Collisions since 1979
286
2,767th highest of 4,923 roads
Casualties
406
1.42 per collision
Fatal collisions
6
6 people killed
Serious collisions
102
124 seriously injured
Collisions in 2025
2
Down 33% on 2024
Casualties in 2025
2
Down 60% on 2024

Crash severity on the B4306

On the B4306, 2.1% of collisions were fatal and 36% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal62.1%
  • Serious10236%
  • Slight17862%

Where the B4306 ranks among 4,923 roads

Most collisions
2,767th
Most casualties
2,701st
Most fatal collisions
2,299th
Most serious collisions
1,881st

B4306 accidents by year

Collisions on the B4306 peaked at 16 in 1986 and were down to 2 in 2025.

Collisions and casualties on the B4306, 1979 to 2025

  • Collisions
  • Collisions in 2025: 2
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202522
202435
202356
202223
202156
202045
201966
201811
201745
201633
201511
201448
201311
201235
201136
2010812
200946
20081321
200768
20061117
2005710
20041420
200323
2002715
200159
200046
199944
1998510
199768
1996811
19951010
199446
199359
1992915
1991710
19901014
198968
19881010
198757
19861616
1985715
198466
198377
19821015
198137
1980913
19791115

When crashes happen on the B4306

Friday has the most collisions on the B4306 (55), and 3pm to 6pm is the busiest time of day (67).

Collisions by day of the week

  • Monday39 (14%)
  • Tuesday43 (15%)
  • Wednesday40 (14%)
  • Thursday36 (13%)
  • Friday55 (19%)
  • Saturday42 (15%)
  • Sunday31 (11%)

Collisions by time of day

  • Midnight to 3am16 (5.6%)
  • 3am to 6am7 (2.4%)
  • 6am to 9am40 (14%)
  • 9am to noon43 (15%)
  • Noon to 3pm31 (11%)
  • 3pm to 6pm67 (23%)
  • 6pm to 9pm51 (18%)
  • 9pm to midnight31 (11%)

Collisions by month

  • January25 (8.7%)
  • February18 (6.3%)
  • March31 (11%)
  • April19 (6.6%)
  • May22 (7.7%)
  • June25 (8.7%)
  • July20 (7%)
  • August19 (6.6%)
  • September32 (11%)
  • October25 (8.7%)
  • November28 (9.8%)
  • December22 (7.7%)

Light conditions at the time

  • Daylight199 (70%)
  • Dark, no street lighting55 (19%)
  • Dark, street lights lit29 (10%)
  • Dark, lighting unknown1 (0.3%)
  • Dark, street lights unlit1 (0.3%)
  • Not recorded1 (0.3%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B4306 crashes

On the B4306, 54% of collisions happened where the speed limit was 60 mph and 52% on a dry road surface.

Speed limit at the scene

  • 20 mph1 (0.3%)
  • 30 mph111 (39%)
  • 40 mph10 (3.5%)
  • 50 mph9 (3.1%)
  • 60 mph155 (54%)

Weather at the time

  • Fine, no high winds195 (68%)
  • Raining, no high winds60 (21%)
  • Raining with high winds9 (3.1%)
  • Fog or mist5 (1.7%)
  • Other15 (5.2%)
  • Not recorded2 (0.7%)

Road surface

  • Dry150 (52%)
  • Wet or damp120 (42%)
  • Frost or ice11 (3.8%)
  • Snow2 (0.7%)
  • Other2 (0.7%)
  • Not recorded1 (0.3%)

Type of road

  • Single carriageway282 (99%)
  • One way street or slip road2 (0.7%)
  • Dual carriageway1 (0.3%)
  • Not recorded1 (0.3%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B4306 crashes

Car occupants make up 74% of the people killed or injured on the B4306, followed by motorcyclists (9.9%).

Casualties by road user

  • Car occupant301 (74%)
  • Motorcyclist40 (9.9%)
  • Pedestrian24 (5.9%)
  • Van occupant19 (4.7%)
  • Goods vehicle occupant (over 3.5 tonnes)7 (1.7%)
  • Bus or coach occupant6 (1.5%)
  • Cyclist4 (1%)
  • Other5 (1.2%)

Vehicles involved

  • Car325 (73%)
  • Motorcycle40 (8.9%)
  • Goods vehicle over 3.5 tonnes26 (5.8%)
  • Van or goods vehicle up to 3.5 tonnes25 (5.6%)
  • Bus or coach10 (2.2%)
  • Other vehicle8 (1.8%)
  • Pedal cycle6 (1.3%)
  • Other7 (1.6%)

Casualties by age

  • 0 to 56 (1.5%)
  • 6 to 1017 (4.2%)
  • 11 to 1515 (3.7%)
  • 16 to 20119 (29%)
  • 21 to 2559 (15%)
  • 26 to 3558 (14%)
  • 36 to 4550 (12%)
  • 46 to 5528 (6.9%)
  • 56 to 6528 (6.9%)
  • 66 to 7517 (4.2%)
  • Over 759 (2.2%)

Drivers, passengers and pedestrians

  • Driver or rider268 (66%)
  • Passenger114 (28%)
  • Pedestrian24 (5.9%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B4306

Map of the 24 most recent crashes on the B4306

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

  • 24 crashes
  • Fatal
  • Serious
  • Slight

B4306 crashes by council area

All 286 collisions on the B4306 were in Carmarthenshire.

Collisions on the B4306 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stCarmarthenshire2864066102

B4306 crashes by town

Of the 286 collisions on the B4306, 18 were in the built-up area of Hendy and Fforest.

Recent crashes on the B4306

These are the 25 most recent collisions on the B4306, from 4 August 2019 to 24 November 2025.

Severity