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CrashStats

B5121 accidents: crash map and statistics

Police recorded 286 collisions on the B5121 from 1979 to 2025, with 436 casualties. Of those crashes, 6 were fatal and 55 serious, and 6 people were killed.

In 2025 there was 1 collision on the B5121, down 50% from 2 in 2024, with 4 casualties.

Collisions since 1979
286
2,767th highest of 4,923 roads
Casualties
436
1.52 per collision
Fatal collisions
6
6 people killed
Serious collisions
55
70 seriously injured
Collisions in 2025
1
Down 50% on 2024
Casualties in 2025
4
Up 33% on 2024

Crash severity on the B5121

On the B5121, 2.1% of collisions were fatal and 19% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal62.1%
  • Serious5519%
  • Slight22579%

Where the B5121 ranks among 4,923 roads

Most collisions
2,767th
Most casualties
2,599th
Most fatal collisions
2,299th
Most serious collisions
2,827th

B5121 accidents by year

Collisions on the B5121 peaked at 15 in 1986 and were down to 1 in 2025.

Collisions and casualties on the B5121, 1979 to 2025

  • Collisions
  • Collisions in 2025: 1
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202514
202423
202311
202200
202133
202044
201911
201835
201734
201622
201523
201468
201344
201244
201145
201011
200959
2008812
2007617
2006810
200556
2004812
2003710
200266
2001610
200035
19991217
1998811
199758
1996914
19951321
19941016
1993918
1992617
19911018
1990810
198957
198845
1987811
19861533
19851319
198455
198356
19821320
198157
198099
19791115

When crashes happen on the B5121

Friday has the most collisions on the B5121 (50), and 3pm to 6pm is the busiest time of day (72).

Collisions by day of the week

  • Monday40 (14%)
  • Tuesday30 (10%)
  • Wednesday41 (14%)
  • Thursday46 (16%)
  • Friday50 (17%)
  • Saturday45 (16%)
  • Sunday34 (12%)

Collisions by time of day

  • Midnight to 3am7 (2.4%)
  • 3am to 6am4 (1.4%)
  • 6am to 9am26 (9.1%)
  • 9am to noon38 (13%)
  • Noon to 3pm54 (19%)
  • 3pm to 6pm72 (25%)
  • 6pm to 9pm58 (20%)
  • 9pm to midnight27 (9.4%)

Collisions by month

  • January23 (8%)
  • February22 (7.7%)
  • March28 (9.8%)
  • April25 (8.7%)
  • May30 (10%)
  • June20 (7%)
  • July25 (8.7%)
  • August22 (7.7%)
  • September22 (7.7%)
  • October21 (7.3%)
  • November23 (8%)
  • December25 (8.7%)

Light conditions at the time

  • Daylight210 (73%)
  • Dark, street lights lit52 (18%)
  • Dark, no street lighting18 (6.3%)
  • Dark, lighting unknown3 (1%)
  • Dark, street lights unlit3 (1%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B5121 crashes

On the B5121, 65% of collisions happened where the speed limit was 30 mph and 53% on a dry road surface.

Speed limit at the scene

  • 30 mph187 (65%)
  • 40 mph30 (10%)
  • 50 mph1 (0.3%)
  • 60 mph65 (23%)
  • 70 mph3 (1%)

Weather at the time

  • Fine, no high winds207 (72%)
  • Raining, no high winds48 (17%)
  • Fine with high winds7 (2.4%)
  • Raining with high winds7 (2.4%)
  • Other14 (4.9%)
  • Not recorded3 (1%)

Road surface

  • Dry153 (53%)
  • Wet or damp123 (43%)
  • Frost or ice6 (2.1%)
  • Snow2 (0.7%)
  • Oil or diesel1 (0.3%)
  • Not recorded1 (0.3%)

Type of road

  • Single carriageway278 (97%)
  • Dual carriageway4 (1.4%)
  • One way street or slip road4 (1.4%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B5121 crashes

Car occupants make up 70% of the people killed or injured on the B5121, followed by pedestrians (14%).

Casualties by road user

  • Car occupant306 (70%)
  • Pedestrian60 (14%)
  • Motorcyclist33 (7.6%)
  • Cyclist11 (2.5%)
  • Van occupant9 (2.1%)
  • Taxi or private hire car occupant6 (1.4%)
  • Goods vehicle occupant (over 3.5 tonnes)5 (1.1%)
  • Other6 (1.4%)

Vehicles involved

  • Car408 (79%)
  • Motorcycle36 (7%)
  • Van or goods vehicle up to 3.5 tonnes14 (2.7%)
  • Goods vehicle over 3.5 tonnes13 (2.5%)
  • Bus or coach11 (2.1%)
  • Pedal cycle11 (2.1%)
  • Other vehicle7 (1.4%)
  • Other14 (2.7%)

Casualties by age

  • 0 to 59 (2.1%)
  • 6 to 1026 (6%)
  • 11 to 1523 (5.3%)
  • 16 to 20109 (25%)
  • 21 to 2565 (15%)
  • 26 to 3577 (18%)
  • 36 to 4547 (11%)
  • 46 to 5529 (6.7%)
  • 56 to 6515 (3.4%)
  • 66 to 7520 (4.6%)
  • Over 7516 (3.7%)

Drivers, passengers and pedestrians

  • Driver or rider239 (55%)
  • Passenger137 (31%)
  • Pedestrian60 (14%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B5121

Map of the 25 most recent crashes on the B5121

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

B5121 crashes by council area

Of the 286 collisions on the B5121, 283 were in Flintshire.

Collisions on the B5121 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stFlintshire283427654

B5121 crashes by town

Collisions on the B5121 were recorded in 2 towns and built-up areas, led by Holywell, Flintshire (85) and Greenfield, Flintshire (64).

Recent crashes on the B5121

These are the 25 most recent collisions on the B5121, from 23 May 2014 to 23 April 2025.

Severity