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CrashStats

B4166 accidents: crash map and statistics

Police recorded 261 collisions on the B4166 from 1979 to 2025, with 324 casualties. Of those crashes, 3 were fatal and 49 serious, and 3 people were killed.

In 2025 there were 2 collisions on the B4166, down 50% from 4 in 2024, with 2 casualties.

Collisions since 1979
261
2,904th highest of 4,923 roads
Casualties
324
1.24 per collision
Fatal collisions
3
3 people killed
Serious collisions
49
55 seriously injured
Collisions in 2025
2
Down 50% on 2024
Casualties in 2025
2
Down 50% on 2024

Crash severity on the B4166

On the B4166, 1.1% of collisions were fatal and 19% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal31.1%
  • Serious4919%
  • Slight20980%

Where the B4166 ranks among 4,923 roads

Most collisions
2,904th
Most casualties
3,017th
Most fatal collisions
3,114th
Most serious collisions
2,995th

B4166 accidents by year

Collisions on the B4166 peaked at 14 in 2000 and were down to 2 in 2025.

Collisions and casualties on the B4166, 1979 to 2025

  • Collisions
  • Collisions in 2025: 2
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202522
202444
202368
202277
2021611
202024
201924
201857
201734
201667
201522
201422
201335
201211
201122
201067
200956
200856
2007712
20061216
2005810
200466
200346
200233
200178
20001418
1999710
19981115
199755
1996810
199544
199455
199357
199233
199156
19901115
198937
198877
198722
198633
198578
198466
198333
19821011
19811012
198077
1979910

When crashes happen on the B4166

Friday has the most collisions on the B4166 (54), and 3pm to 6pm is the busiest time of day (70).

Collisions by day of the week

  • Monday38 (15%)
  • Tuesday36 (14%)
  • Wednesday43 (16%)
  • Thursday41 (16%)
  • Friday54 (21%)
  • Saturday20 (7.7%)
  • Sunday29 (11%)

Collisions by time of day

  • Midnight to 3am7 (2.7%)
  • 3am to 6am3 (1.1%)
  • 6am to 9am42 (16%)
  • 9am to noon34 (13%)
  • Noon to 3pm45 (17%)
  • 3pm to 6pm70 (27%)
  • 6pm to 9pm43 (16%)
  • 9pm to midnight17 (6.5%)

Collisions by month

  • January29 (11%)
  • February24 (9.2%)
  • March18 (6.9%)
  • April19 (7.3%)
  • May16 (6.1%)
  • June17 (6.5%)
  • July25 (9.6%)
  • August20 (7.7%)
  • September19 (7.3%)
  • October24 (9.2%)
  • November26 (10%)
  • December24 (9.2%)

Light conditions at the time

  • Daylight190 (73%)
  • Dark, street lights lit68 (26%)
  • Dark, no street lighting2 (0.8%)
  • Dark, lighting unknown1 (0.4%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B4166 crashes

On the B4166, 99% of collisions happened where the speed limit was 30 mph and 57% on a dry road surface.

Speed limit at the scene

  • 20 mph2 (0.8%)
  • 30 mph258 (99%)
  • 40 mph1 (0.4%)

Weather at the time

  • Fine, no high winds189 (72%)
  • Raining, no high winds41 (16%)
  • Snowing, no high winds5 (1.9%)
  • Fog or mist1 (0.4%)
  • Other19 (7.3%)
  • Not recorded6 (2.3%)

Road surface

  • Dry149 (57%)
  • Wet or damp100 (38%)
  • Frost or ice7 (2.7%)
  • Snow5 (1.9%)

Type of road

  • Single carriageway256 (98%)
  • One way street or slip road2 (0.8%)
  • Dual carriageway1 (0.4%)
  • Not recorded2 (0.8%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B4166 crashes

Car occupants make up 54% of the people killed or injured on the B4166, followed by pedestrians (21%).

Casualties by road user

  • Car occupant175 (54%)
  • Pedestrian68 (21%)
  • Cyclist27 (8.3%)
  • Motorcyclist27 (8.3%)
  • Van occupant9 (2.8%)
  • Bus or coach occupant8 (2.5%)
  • Other8 (2.5%)
  • Not recorded2 (0.6%)

Vehicles involved

  • Car330 (71%)
  • Van or goods vehicle up to 3.5 tonnes31 (6.7%)
  • Motorcycle28 (6%)
  • Pedal cycle28 (6%)
  • Goods vehicle over 3.5 tonnes25 (5.4%)
  • Bus or coach11 (2.4%)
  • Other vehicle7 (1.5%)
  • Other6 (1.3%)

Casualties by age

  • 0 to 57 (2.2%)
  • 6 to 1018 (5.6%)
  • 11 to 1519 (5.9%)
  • 16 to 2047 (15%)
  • 21 to 2541 (13%)
  • 26 to 3565 (20%)
  • 36 to 4550 (15%)
  • 46 to 5529 (9%)
  • 56 to 6518 (5.6%)
  • 66 to 7514 (4.3%)
  • Over 7511 (3.4%)
  • Not recorded5 (1.5%)

Drivers, passengers and pedestrians

  • Driver or rider182 (56%)
  • Passenger74 (23%)
  • Pedestrian68 (21%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B4166

Map of the 25 most recent crashes on the B4166

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

  • 25 crashes
  • Serious
  • Slight

B4166 crashes by council area

Of the 261 collisions on the B4166, 260 were in Sandwell.

Collisions on the B4166 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stSandwell260323349

B4166 crashes by town

Collisions on the B4166 were recorded in 3 towns and built-up areas, led by West Bromwich (198) and Oldbury, Sandwell (40).

Recent crashes on the B4166

These are the 25 most recent collisions on the B4166, from 25 February 2021 to 10 August 2025.

Severity