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CrashStats

B4333 accidents: crash map and statistics

Police recorded 369 collisions on the B4333 from 1979 to 2025, with 554 casualties. Of those crashes, 4 were fatal and 109 serious, and 4 people were killed.

In 2025 there were 7 collisions on the B4333, down 30% from 10 in 2024, with 13 casualties.

Collisions since 1979
369
2,402nd highest of 4,923 roads
Casualties
554
1.50 per collision
Fatal collisions
4
4 people killed
Serious collisions
109
135 seriously injured
Collisions in 2025
7
Down 30% on 2024
Casualties in 2025
13
Down 7% on 2024

Crash severity on the B4333

On the B4333, 1.1% of collisions were fatal and 30% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal41.1%
  • Serious10930%
  • Slight25669%

Where the B4333 ranks among 4,923 roads

Most collisions
2,402nd
Most casualties
2,261st
Most fatal collisions
2,815th
Most serious collisions
1,774th

B4333 accidents by year

Collisions on the B4333 peaked at 15 in 1989 and were down to 7 in 2025.

Collisions and casualties on the B4333, 1979 to 2025

  • Collisions
  • Collisions in 2025
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
2025713
20241014
202357
202268
2021810
202035
201911
201811
201779
2016712
201546
201444
201379
2012710
201169
20101120
20091014
20081219
200748
2006913
20051126
20041114
20031014
20021120
20011114
200068
1999910
199846
19971320
1996817
199599
1994916
199379
1992912
1991916
19901215
19891525
1988912
198745
1986813
19851116
198458
19831213
198278
1981814
198068
1979614

When crashes happen on the B4333

Thursday has the most collisions on the B4333 (61), and 3pm to 6pm is the busiest time of day (103).

Collisions by day of the week

  • Monday45 (12%)
  • Tuesday57 (15%)
  • Wednesday56 (15%)
  • Thursday61 (17%)
  • Friday58 (16%)
  • Saturday59 (16%)
  • Sunday33 (8.9%)

Collisions by time of day

  • Midnight to 3am14 (3.8%)
  • 3am to 6am5 (1.4%)
  • 6am to 9am40 (11%)
  • 9am to noon63 (17%)
  • Noon to 3pm66 (18%)
  • 3pm to 6pm103 (28%)
  • 6pm to 9pm59 (16%)
  • 9pm to midnight19 (5.1%)

Collisions by month

  • January44 (12%)
  • February20 (5.4%)
  • March22 (6%)
  • April26 (7%)
  • May27 (7.3%)
  • June24 (6.5%)
  • July27 (7.3%)
  • August37 (10%)
  • September46 (12%)
  • October29 (7.9%)
  • November32 (8.7%)
  • December35 (9.5%)

Light conditions at the time

  • Daylight269 (73%)
  • Dark, no street lighting78 (21%)
  • Dark, street lights lit14 (3.8%)
  • Dark, street lights unlit4 (1.1%)
  • Dark, lighting unknown2 (0.5%)
  • Not recorded2 (0.5%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B4333 crashes

On the B4333, 76% of collisions happened where the speed limit was 60 mph and 50% on a dry road surface.

Speed limit at the scene

  • 20 mph2 (0.5%)
  • 30 mph65 (18%)
  • 40 mph17 (4.6%)
  • 50 mph3 (0.8%)
  • 60 mph282 (76%)

Weather at the time

  • Fine, no high winds242 (66%)
  • Raining, no high winds64 (17%)
  • Raining with high winds16 (4.3%)
  • Snowing, no high winds6 (1.6%)
  • Other36 (9.8%)
  • Not recorded5 (1.4%)

Road surface

  • Dry183 (50%)
  • Wet or damp164 (44%)
  • Frost or ice14 (3.8%)
  • Snow6 (1.6%)
  • Not recorded2 (0.5%)

Type of road

  • Single carriageway367 (99%)
  • One way street or slip road1 (0.3%)
  • Roundabout1 (0.3%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B4333 crashes

Car occupants make up 76% of the people killed or injured on the B4333, followed by motorcyclists (7.9%).

Casualties by road user

  • Car occupant420 (76%)
  • Motorcyclist44 (7.9%)
  • Van occupant33 (6%)
  • Pedestrian26 (4.7%)
  • Goods vehicle occupant (over 3.5 tonnes)11 (2%)
  • Other vehicle occupant9 (1.6%)
  • Cyclist5 (0.9%)
  • Other6 (1.1%)

Vehicles involved

  • Car444 (74%)
  • Motorcycle44 (7.3%)
  • Van or goods vehicle up to 3.5 tonnes38 (6.3%)
  • Goods vehicle over 3.5 tonnes36 (6%)
  • Other vehicle15 (2.5%)
  • Bus or coach8 (1.3%)
  • Agricultural vehicle6 (1%)
  • Other8 (1.3%)

Casualties by age

  • 0 to 513 (2.3%)
  • 6 to 1013 (2.3%)
  • 11 to 1525 (4.5%)
  • 16 to 20125 (23%)
  • 21 to 2560 (11%)
  • 26 to 3588 (16%)
  • 36 to 4572 (13%)
  • 46 to 5559 (11%)
  • 56 to 6542 (7.6%)
  • 66 to 7539 (7%)
  • Over 7518 (3.2%)

Drivers, passengers and pedestrians

  • Driver or rider343 (62%)
  • Passenger185 (33%)
  • Pedestrian26 (4.7%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B4333

Map of the 25 most recent crashes on the B4333

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

  • 25 crashes
  • Serious
  • Slight

B4333 crashes by council area

Collisions on the B4333 were recorded in 2 council areas. Carmarthenshire has the most, with 198, followed by Ceredigion (171).

Collisions on the B4333 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stCarmarthenshire198308458
2ndCeredigion171246051

B4333 crashes by town

Of the 369 collisions on the B4333, 29 were in the built-up area of Newcastle Emlyn.

Recent crashes on the B4333

These are the 25 most recent collisions on the B4333, from 2 May 2022 to 16 October 2025.

Severity