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CrashStats

B4443 accidents: crash map and statistics

Police recorded 494 collisions on the B4443 from 1979 to 2025, with 637 casualties. Of those crashes, 7 were fatal and 86 serious, and 7 people were killed.

In 2025 there were 3 collisions on the B4443, up from none in 2024, with 4 casualties.

Collisions since 1979
494
1,993rd highest of 4,923 roads
Casualties
637
1.29 per collision
Fatal collisions
7
7 people killed
Serious collisions
86
96 seriously injured
Collisions in 2025
3
Up from none in 2024
Casualties in 2025
4
Up from none in 2024

Crash severity on the B4443

On the B4443, 1.4% of collisions were fatal and 17% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal71.4%
  • Serious8617%
  • Slight40181%

Where the B4443 ranks among 4,923 roads

Most collisions
1,993rd
Most casualties
2,046th
Most fatal collisions
2,103rd
Most serious collisions
2,157th

B4443 accidents by year

Collisions on the B4443 peaked at 20 in 1996 and were down to 3 in 2025.

Collisions and casualties on the B4443, 1979 to 2025

  • Collisions
  • Collisions in 2025: 3
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202534
202400
202378
202233
202158
202057
201979
201857
201755
201667
201556
201489
2013911
20121215
20111114
2010913
200945
20081119
200756
20061524
20051320
200468
20031217
20021521
200178
20001215
19991111
19981112
19971825
19962028
19951518
19942029
1993911
199288
19911519
19901315
19891115
19882027
19871218
198678
19851520
19841824
19832022
19821317
19811515
1980911
19791415

When crashes happen on the B4443

Wednesday has the most collisions on the B4443 (80), and 3pm to 6pm is the busiest time of day (128).

Collisions by day of the week

  • Monday74 (15%)
  • Tuesday79 (16%)
  • Wednesday80 (16%)
  • Thursday71 (14%)
  • Friday80 (16%)
  • Saturday61 (12%)
  • Sunday49 (9.9%)

Collisions by time of day

  • Midnight to 3am19 (3.8%)
  • 3am to 6am4 (0.8%)
  • 6am to 9am62 (13%)
  • 9am to noon52 (11%)
  • Noon to 3pm74 (15%)
  • 3pm to 6pm128 (26%)
  • 6pm to 9pm91 (18%)
  • 9pm to midnight64 (13%)

Collisions by month

  • January47 (9.5%)
  • February34 (6.9%)
  • March47 (9.5%)
  • April41 (8.3%)
  • May44 (8.9%)
  • June38 (7.7%)
  • July38 (7.7%)
  • August33 (6.7%)
  • September39 (7.9%)
  • October46 (9.3%)
  • November43 (8.7%)
  • December44 (8.9%)

Light conditions at the time

  • Daylight327 (66%)
  • Dark, street lights lit133 (27%)
  • Dark, no street lighting20 (4%)
  • Dark, lighting unknown13 (2.6%)
  • Dark, street lights unlit1 (0.2%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B4443 crashes

On the B4443, 80% of collisions happened where the speed limit was 30 mph and 67% on a dry road surface.

Speed limit at the scene

  • 30 mph394 (80%)
  • 40 mph26 (5.3%)
  • 50 mph26 (5.3%)
  • 60 mph48 (9.7%)

Weather at the time

  • Fine, no high winds407 (82%)
  • Raining, no high winds50 (10%)
  • Fine with high winds11 (2.2%)
  • Raining with high winds4 (0.8%)
  • Other20 (4%)
  • Not recorded2 (0.4%)

Road surface

  • Dry330 (67%)
  • Wet or damp153 (31%)
  • Frost or ice7 (1.4%)
  • Snow2 (0.4%)
  • Flood over 3cm deep1 (0.2%)
  • Not recorded1 (0.2%)

Type of road

  • Single carriageway432 (87%)
  • Roundabout55 (11%)
  • Dual carriageway4 (0.8%)
  • One way street or slip road1 (0.2%)
  • Not recorded2 (0.4%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B4443 crashes

Car occupants make up 58% of the people killed or injured on the B4443, followed by pedestrians (15%).

Casualties by road user

  • Car occupant372 (58%)
  • Pedestrian94 (15%)
  • Motorcyclist77 (12%)
  • Cyclist72 (11%)
  • Van occupant9 (1.4%)
  • Taxi or private hire car occupant6 (0.9%)
  • Other vehicle occupant4 (0.6%)
  • Other3 (0.5%)

Vehicles involved

  • Car711 (76%)
  • Motorcycle79 (8.4%)
  • Pedal cycle73 (7.8%)
  • Van or goods vehicle up to 3.5 tonnes30 (3.2%)
  • Goods vehicle over 3.5 tonnes12 (1.3%)
  • Taxi or private hire car11 (1.2%)
  • Other18 (1.9%)
  • Not recorded2 (0.2%)

Casualties by age

  • 0 to 58 (1.3%)
  • 6 to 1014 (2.2%)
  • 11 to 1544 (6.9%)
  • 16 to 20121 (19%)
  • 21 to 2581 (13%)
  • 26 to 35123 (19%)
  • 36 to 4590 (14%)
  • 46 to 5563 (9.9%)
  • 56 to 6550 (7.8%)
  • 66 to 7517 (2.7%)
  • Over 7511 (1.7%)
  • Not recorded15 (2.4%)

Drivers, passengers and pedestrians

  • Driver or rider417 (65%)
  • Passenger126 (20%)
  • Pedestrian94 (15%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B4443

Map of the 25 most recent crashes on the B4443

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

  • 25 crashes
  • Serious
  • Slight

B4443 crashes by council area

All 494 collisions on the B4443 were in Buckinghamshire.

Collisions on the B4443 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stBuckinghamshire494637786

B4443 crashes by town

Collisions on the B4443 were recorded in 2 towns and built-up areas, led by Aylesbury (400) and Stoke Mandeville (70).

Recent crashes on the B4443

These are the 25 most recent collisions on the B4443, from 8 October 2019 to 10 September 2025.

Severity