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CrashStats

B4317 accidents: crash map and statistics

Police recorded 303 collisions on the B4317 from 1979 to 2025, with 448 casualties. Of those crashes, 14 were fatal and 89 serious, and 15 people were killed.

In 2025 there were 4 collisions on the B4317, up 100% from 2 in 2024, with 4 casualties.

Collisions since 1979
303
2,675th highest of 4,923 roads
Casualties
448
1.48 per collision
Fatal collisions
14
15 people killed
Serious collisions
89
140 seriously injured
Collisions in 2025
4
Up 100% on 2024
Casualties in 2025
4
Up 100% on 2024

Crash severity on the B4317

On the B4317, 4.6% of collisions were fatal and 29% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal144.6%
  • Serious8929%
  • Slight20066%

Where the B4317 ranks among 4,923 roads

Most collisions
2,675th
Most casualties
2,562nd
Most fatal collisions
1,329th
Most serious collisions
2,105th

B4317 accidents by year

Collisions on the B4317 peaked at 17 in 2007 and were down to 4 in 2025.

Collisions and casualties on the B4317, 1979 to 2025

  • Collisions
  • Collisions in 2025: 4
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202544
202422
202311
202222
202112
202012
201944
201846
201733
2016813
201524
201433
201334
201233
2011910
2010811
2009911
200846
20071723
200646
2005810
2004811
20031019
2002811
2001912
2000817
1999711
199845
1997617
199622
19951321
199467
199357
19921218
1991513
19901215
19891016
198858
198777
1986711
198588
1984810
1983816
198255
19811017
19801120
1979914

When crashes happen on the B4317

Saturday has the most collisions on the B4317 (51), and 6pm to 9pm is the busiest time of day (59).

Collisions by day of the week

  • Monday42 (14%)
  • Tuesday31 (10%)
  • Wednesday46 (15%)
  • Thursday44 (15%)
  • Friday48 (16%)
  • Saturday51 (17%)
  • Sunday41 (14%)

Collisions by time of day

  • Midnight to 3am20 (6.6%)
  • 3am to 6am5 (1.7%)
  • 6am to 9am34 (11%)
  • 9am to noon36 (12%)
  • Noon to 3pm48 (16%)
  • 3pm to 6pm58 (19%)
  • 6pm to 9pm59 (19%)
  • 9pm to midnight43 (14%)

Collisions by month

  • January19 (6.3%)
  • February16 (5.3%)
  • March22 (7.3%)
  • April26 (8.6%)
  • May14 (4.6%)
  • June27 (8.9%)
  • July26 (8.6%)
  • August36 (12%)
  • September28 (9.2%)
  • October30 (9.9%)
  • November29 (9.6%)
  • December30 (9.9%)

Light conditions at the time

  • Daylight205 (68%)
  • Dark, no street lighting55 (18%)
  • Dark, street lights lit38 (13%)
  • Dark, street lights unlit4 (1.3%)
  • Not recorded1 (0.3%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B4317 crashes

On the B4317, 45% of collisions happened where the speed limit was 60 mph and 57% on a dry road surface.

Speed limit at the scene

  • 20 mph3 (1%)
  • 30 mph133 (44%)
  • 40 mph10 (3.3%)
  • 50 mph21 (6.9%)
  • 60 mph135 (45%)
  • 70 mph1 (0.3%)

Weather at the time

  • Fine, no high winds216 (71%)
  • Raining, no high winds52 (17%)
  • Raining with high winds14 (4.6%)
  • Fine with high winds6 (2%)
  • Other12 (4%)
  • Not recorded3 (1%)

Road surface

  • Dry173 (57%)
  • Wet or damp122 (40%)
  • Frost or ice6 (2%)
  • Flood over 3cm deep1 (0.3%)
  • Not recorded1 (0.3%)

Type of road

  • Single carriageway302 (100%)
  • Dual carriageway1 (0.3%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B4317 crashes

Car occupants make up 74% of the people killed or injured on the B4317, followed by motorcyclists (11%).

Casualties by road user

  • Car occupant333 (74%)
  • Motorcyclist48 (11%)
  • Pedestrian27 (6%)
  • Van occupant14 (3.1%)
  • Cyclist8 (1.8%)
  • Minibus occupant6 (1.3%)
  • Bus or coach occupant5 (1.1%)
  • Other7 (1.6%)

Vehicles involved

  • Car379 (73%)
  • Motorcycle52 (10%)
  • Van or goods vehicle up to 3.5 tonnes37 (7.1%)
  • Goods vehicle over 3.5 tonnes22 (4.2%)
  • Pedal cycle9 (1.7%)
  • Bus or coach8 (1.5%)
  • Other vehicle7 (1.3%)
  • Other8 (1.5%)

Casualties by age

  • 0 to 511 (2.5%)
  • 6 to 1012 (2.7%)
  • 11 to 1520 (4.5%)
  • 16 to 20123 (27%)
  • 21 to 2559 (13%)
  • 26 to 3591 (20%)
  • 36 to 4556 (13%)
  • 46 to 5535 (7.8%)
  • 56 to 6514 (3.1%)
  • 66 to 7517 (3.8%)
  • Over 7510 (2.2%)

Drivers, passengers and pedestrians

  • Driver or rider272 (61%)
  • Passenger149 (33%)
  • Pedestrian27 (6%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B4317

Map of the 25 most recent crashes on the B4317

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

B4317 crashes by council area

All 303 collisions on the B4317 were in Carmarthenshire.

Collisions on the B4317 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stCarmarthenshire3034481489

B4317 crashes by town

Collisions on the B4317 were recorded in 2 towns and built-up areas, led by Tumble (18) and Pontyates (4).

Recent crashes on the B4317

These are the 25 most recent collisions on the B4317, from 15 July 2016 to 28 November 2025.

Severity