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CrashStats

B4137 accidents: crash map and statistics

Police recorded 794 collisions on the B4137 from 1979 to 2025, with 1,053 casualties. Of those crashes, 6 were fatal and 133 serious, and 6 people were killed.

In 2025 there were 8 collisions on the B4137, up 33% from 6 in 2024, with 9 casualties.

Collisions since 1979
794
1,349th highest of 4,923 roads
Casualties
1,053
1.33 per collision
Fatal collisions
6
6 people killed
Serious collisions
133
149 seriously injured
Collisions in 2025
8
Up 33% on 2024
Casualties in 2025
9
Down 18% on 2024

Crash severity on the B4137

On the B4137, 0.8% of collisions were fatal and 17% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal60.8%
  • Serious13317%
  • Slight65582%

Where the B4137 ranks among 4,923 roads

Most collisions
1,349th
Most casualties
1,374th
Most fatal collisions
2,299th
Most serious collisions
1,517th

B4137 accidents by year

Collisions on the B4137 peaked at 35 in 1979 and were down to 8 in 2025.

Collisions and casualties on the B4137, 1979 to 2025

  • Collisions
  • Collisions in 2025: 8
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202589
2024611
2023811
202245
20211014
202058
20191423
20181120
2017912
201655
20151017
2014411
201358
2012813
201167
2010920
200956
2008914
2007711
2006917
20051319
20041419
20033045
20022438
20012225
20002534
19992325
19981620
19972334
19961824
19952530
19942731
19932431
19921416
19912532
19902123
19892831
19882542
19872125
19862331
19852530
19842429
19832830
19822731
19813347
19802931
19793538

When crashes happen on the B4137

Friday has the most collisions on the B4137 (155), and 3pm to 6pm is the busiest time of day (217).

Collisions by day of the week

  • Monday114 (14%)
  • Tuesday111 (14%)
  • Wednesday98 (12%)
  • Thursday121 (15%)
  • Friday155 (20%)
  • Saturday110 (14%)
  • Sunday85 (11%)

Collisions by time of day

  • Midnight to 3am24 (3%)
  • 3am to 6am14 (1.8%)
  • 6am to 9am90 (11%)
  • 9am to noon106 (13%)
  • Noon to 3pm107 (13%)
  • 3pm to 6pm217 (27%)
  • 6pm to 9pm145 (18%)
  • 9pm to midnight91 (11%)

Collisions by month

  • January59 (7.4%)
  • February56 (7.1%)
  • March75 (9.4%)
  • April61 (7.7%)
  • May76 (9.6%)
  • June52 (6.5%)
  • July70 (8.8%)
  • August63 (7.9%)
  • September77 (9.7%)
  • October65 (8.2%)
  • November71 (8.9%)
  • December69 (8.7%)

Light conditions at the time

  • Daylight541 (68%)
  • Dark, street lights lit245 (31%)
  • Dark, lighting unknown5 (0.6%)
  • Dark, no street lighting2 (0.3%)
  • Dark, street lights unlit1 (0.1%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B4137 crashes

On the B4137, 97% of collisions happened where the speed limit was 30 mph and 62% on a dry road surface.

Speed limit at the scene

  • 30 mph774 (97%)
  • 40 mph15 (1.9%)
  • 50 mph1 (0.1%)
  • 60 mph4 (0.5%)

Weather at the time

  • Fine, no high winds561 (71%)
  • Raining, no high winds135 (17%)
  • Fine with high winds12 (1.5%)
  • Raining with high winds9 (1.1%)
  • Other70 (8.8%)
  • Not recorded7 (0.9%)

Road surface

  • Dry496 (62%)
  • Wet or damp280 (35%)
  • Frost or ice15 (1.9%)
  • Snow3 (0.4%)

Type of road

  • Single carriageway675 (85%)
  • Dual carriageway81 (10%)
  • Roundabout17 (2.1%)
  • One way street or slip road2 (0.3%)
  • Not recorded19 (2.4%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B4137 crashes

Car occupants make up 58% of the people killed or injured on the B4137, followed by pedestrians (28%).

Casualties by road user

  • Car occupant610 (58%)
  • Pedestrian292 (28%)
  • Motorcyclist56 (5.3%)
  • Cyclist50 (4.7%)
  • Van occupant33 (3.1%)
  • Bus or coach occupant9 (0.9%)
  • Goods vehicle occupant (over 3.5 tonnes)2 (0.2%)
  • Other vehicle occupant1 (0.1%)

Vehicles involved

  • Car1,089 (80%)
  • Van or goods vehicle up to 3.5 tonnes87 (6.4%)
  • Motorcycle62 (4.6%)
  • Pedal cycle51 (3.8%)
  • Goods vehicle over 3.5 tonnes21 (1.6%)
  • Bus or coach15 (1.1%)
  • Other vehicle15 (1.1%)
  • Other13 (1%)

Casualties by age

  • 0 to 551 (4.8%)
  • 6 to 10110 (10%)
  • 11 to 1570 (6.6%)
  • 16 to 20109 (10%)
  • 21 to 25147 (14%)
  • 26 to 35230 (22%)
  • 36 to 45124 (12%)
  • 46 to 5592 (8.7%)
  • 56 to 6554 (5.1%)
  • 66 to 7526 (2.5%)
  • Over 7518 (1.7%)
  • Not recorded22 (2.1%)

Drivers, passengers and pedestrians

  • Driver or rider461 (44%)
  • Passenger300 (28%)
  • Pedestrian292 (28%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B4137

Map of the 25 most recent crashes on the B4137

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

  • 25 crashes
  • Serious
  • Slight

B4137 crashes by council area

Collisions on the B4137 were recorded in 2 council areas. Birmingham has the most, with 786, followed by Carmarthenshire (8).

Collisions on the B4137 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stBirmingham7861,0426130
2ndCarmarthenshire81103

B4137 crashes by town

Of the 794 collisions on the B4137, 720 were in the built-up area of Birmingham.

Recent crashes on the B4137

These are the 25 most recent collisions on the B4137, from 7 April 2022 to 7 December 2025.

Severity