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CrashStats

B4237 accidents: crash map and statistics

Police recorded 544 collisions on the B4237 from 1979 to 2025, with 727 casualties. Of those crashes, 5 were fatal and 97 serious, and 5 people were killed.

In 2025 there were 22 collisions on the B4237, up 22% from 18 in 2024, with 24 casualties.

Collisions since 1979
544
1,839th highest of 4,923 roads
Casualties
727
1.34 per collision
Fatal collisions
5
5 people killed
Serious collisions
97
104 seriously injured
Collisions in 2025
22
Up 22% on 2024
Casualties in 2025
24
Up 14% on 2024

Crash severity on the B4237

On the B4237, 0.9% of collisions were fatal and 18% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal50.9%
  • Serious9718%
  • Slight44281%

Where the B4237 ranks among 4,923 roads

Most collisions
1,839th
Most casualties
1,866th
Most fatal collisions
2,545th
Most serious collisions
1,966th

B4237 accidents by year

Collisions on the B4237 peaked at 33 in 2008 and were down to 22 in 2025.

Collisions and casualties on the B4237, 1979 to 2025

  • Collisions
  • Collisions in 2025: 22
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20252224
20241821
20231212
20221625
20211012
202067
20191928
20181012
20171723
20161315
20151624
20141725
20131418
2012810
20111629
20101828
20091116
20083343
20072837
20061847
20052837
20041012
200357
200255
20011113
200067
1999610
1998810
19971013
19961218
199577
199455
199326
19921012
199144
199034
198978
19881014
198756
19861011
19851010
19841414
198379
198233
1981910
198067
197999

When crashes happen on the B4237

Tuesday has the most collisions on the B4237 (99), and 3pm to 6pm is the busiest time of day (145).

Collisions by day of the week

  • Monday75 (14%)
  • Tuesday99 (18%)
  • Wednesday70 (13%)
  • Thursday81 (15%)
  • Friday93 (17%)
  • Saturday67 (12%)
  • Sunday59 (11%)

Collisions by time of day

  • Midnight to 3am23 (4.2%)
  • 3am to 6am11 (2%)
  • 6am to 9am48 (8.8%)
  • 9am to noon59 (11%)
  • Noon to 3pm94 (17%)
  • 3pm to 6pm145 (27%)
  • 6pm to 9pm95 (17%)
  • 9pm to midnight69 (13%)

Collisions by month

  • January55 (10%)
  • February33 (6.1%)
  • March46 (8.5%)
  • April47 (8.6%)
  • May44 (8.1%)
  • June38 (7%)
  • July32 (5.9%)
  • August53 (9.7%)
  • September49 (9%)
  • October46 (8.5%)
  • November62 (11%)
  • December39 (7.2%)

Light conditions at the time

  • Daylight360 (66%)
  • Dark, street lights lit169 (31%)
  • Dark, street lights unlit8 (1.5%)
  • Dark, lighting unknown6 (1.1%)
  • Dark, no street lighting1 (0.2%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B4237 crashes

On the B4237, 88% of collisions happened where the speed limit was 30 mph and 69% on a dry road surface.

Speed limit at the scene

  • 20 mph45 (8.3%)
  • 30 mph477 (88%)
  • 40 mph16 (2.9%)
  • 50 mph1 (0.2%)
  • 60 mph3 (0.6%)
  • 70 mph2 (0.4%)

Weather at the time

  • Fine, no high winds413 (76%)
  • Raining, no high winds91 (17%)
  • Raining with high winds9 (1.7%)
  • Snowing, no high winds3 (0.6%)
  • Other21 (3.9%)
  • Not recorded7 (1.3%)

Road surface

  • Dry375 (69%)
  • Wet or damp161 (30%)
  • Frost or ice5 (0.9%)
  • Snow2 (0.4%)
  • Flood over 3cm deep1 (0.2%)

Type of road

  • Single carriageway460 (85%)
  • Dual carriageway70 (13%)
  • Roundabout9 (1.7%)
  • One way street or slip road5 (0.9%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B4237 crashes

Car occupants make up 55% of the people killed or injured on the B4237, followed by pedestrians (20%).

Casualties by road user

  • Car occupant403 (55%)
  • Pedestrian143 (20%)
  • Motorcyclist67 (9.2%)
  • Cyclist66 (9.1%)
  • Bus or coach occupant14 (1.9%)
  • Taxi or private hire car occupant10 (1.4%)
  • Other22 (3%)
  • Not recorded2 (0.3%)

Vehicles involved

  • Car764 (76%)
  • Motorcycle67 (6.7%)
  • Pedal cycle66 (6.6%)
  • Van or goods vehicle up to 3.5 tonnes40 (4%)
  • Taxi or private hire car22 (2.2%)
  • Goods vehicle over 3.5 tonnes14 (1.4%)
  • Other vehicle11 (1.1%)
  • Other21 (2.1%)

Casualties by age

  • 0 to 511 (1.5%)
  • 6 to 1030 (4.1%)
  • 11 to 1556 (7.7%)
  • 16 to 20124 (17%)
  • 21 to 2588 (12%)
  • 26 to 35145 (20%)
  • 36 to 4594 (13%)
  • 46 to 5572 (9.9%)
  • 56 to 6558 (8%)
  • 66 to 7522 (3%)
  • Over 7518 (2.5%)
  • Not recorded9 (1.2%)

Drivers, passengers and pedestrians

  • Driver or rider416 (57%)
  • Passenger168 (23%)
  • Pedestrian143 (20%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B4237

Map of the 25 most recent crashes on the B4237

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

  • 25 crashes
  • Serious
  • Slight

B4237 crashes by council area

Of the 544 collisions on the B4237, 543 were in Newport.

Collisions on the B4237 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stNewport543726596

B4237 crashes by town

Of the 544 collisions on the B4237, 522 were in the built-up area of Newport, Newport.

Recent crashes on the B4237

These are the 25 most recent collisions on the B4237, from 1 December 2024 to 21 December 2025.

Severity