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CrashStats

A4128 accidents: crash map and statistics

Police recorded 1,005 collisions on the A4128 from 1979 to 2025, with 1,343 casualties. Of those crashes, 24 were fatal and 197 serious, and 27 people were killed.

In 2025 there were 7 collisions on the A4128, down 30% from 10 in 2024, with 9 casualties.

Collisions since 1979
1,005
1,087th highest of 4,923 roads
Casualties
1,343
1.34 per collision
Fatal collisions
24
27 people killed
Serious collisions
197
232 seriously injured
Collisions in 2025
7
Down 30% on 2024
Casualties in 2025
9
Down 18% on 2024

Crash severity on the A4128

On the A4128, 2.4% of collisions were fatal and 20% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal242.4%
  • Serious19720%
  • Slight78478%

Where the A4128 ranks among 4,923 roads

Most collisions
1,087th
Most casualties
1,099th
Most fatal collisions
836th
Most serious collisions
1,059th

A4128 accidents by year

Collisions on the A4128 peaked at 44 in 1984 and were down to 7 in 2025.

Collisions and casualties on the A4128, 1979 to 2025

  • Collisions
  • Collisions in 2025: 7
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202579
20241011
202399
20221113
20211016
202044
20191012
201867
201756
20161010
201578
20141415
20131724
20121821
20111315
20101520
20091316
20081825
20071624
20062432
20052429
20043143
20032132
20023641
20012128
20002131
19992637
19982537
19972535
19962641
19952332
19942532
19932752
19923352
19912636
19902630
19893751
19883246
19873137
19862733
19853746
19844455
19832223
19823246
19813449
19802531
19793141

When crashes happen on the A4128

Friday has the most collisions on the A4128 (178), and 3pm to 6pm is the busiest time of day (247).

Collisions by day of the week

  • Monday130 (13%)
  • Tuesday138 (14%)
  • Wednesday151 (15%)
  • Thursday152 (15%)
  • Friday178 (18%)
  • Saturday142 (14%)
  • Sunday114 (11%)

Collisions by time of day

  • Midnight to 3am41 (4.1%)
  • 3am to 6am20 (2%)
  • 6am to 9am136 (14%)
  • 9am to noon119 (12%)
  • Noon to 3pm147 (15%)
  • 3pm to 6pm247 (25%)
  • 6pm to 9pm179 (18%)
  • 9pm to midnight116 (12%)

Collisions by month

  • January90 (9%)
  • February70 (7%)
  • March90 (9%)
  • April69 (6.9%)
  • May80 (8%)
  • June82 (8.2%)
  • July91 (9.1%)
  • August64 (6.4%)
  • September86 (8.6%)
  • October88 (8.8%)
  • November111 (11%)
  • December84 (8.4%)

Light conditions at the time

  • Daylight670 (67%)
  • Dark, street lights lit178 (18%)
  • Dark, no street lighting130 (13%)
  • Dark, lighting unknown21 (2.1%)
  • Dark, street lights unlit5 (0.5%)
  • Not recorded1 (0.1%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A4128 crashes

On the A4128, 61% of collisions happened where the speed limit was 30 mph and 64% on a dry road surface.

Speed limit at the scene

  • 20 mph1 (0.1%)
  • 30 mph613 (61%)
  • 40 mph188 (19%)
  • 50 mph23 (2.3%)
  • 60 mph179 (18%)
  • Not recorded1 (0.1%)

Weather at the time

  • Fine, no high winds794 (79%)
  • Raining, no high winds118 (12%)
  • Fine with high winds21 (2.1%)
  • Raining with high winds12 (1.2%)
  • Other49 (4.9%)
  • Not recorded11 (1.1%)

Road surface

  • Dry647 (64%)
  • Wet or damp328 (33%)
  • Frost or ice22 (2.2%)
  • Snow2 (0.2%)
  • Flood over 3cm deep1 (0.1%)
  • Not recorded5 (0.5%)

Type of road

  • Single carriageway842 (84%)
  • Roundabout117 (12%)
  • Dual carriageway40 (4%)
  • One way street or slip road6 (0.6%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A4128 crashes

Car occupants make up 59% of the people killed or injured on the A4128, followed by motorcyclists (14%).

Casualties by road user

  • Car occupant799 (59%)
  • Motorcyclist185 (14%)
  • Pedestrian184 (14%)
  • Cyclist105 (7.8%)
  • Bus or coach occupant22 (1.6%)
  • Van occupant22 (1.6%)
  • Other25 (1.9%)
  • Not recorded1 (0.1%)

Vehicles involved

  • Car1,431 (75%)
  • Motorcycle188 (9.8%)
  • Pedal cycle107 (5.6%)
  • Van or goods vehicle up to 3.5 tonnes86 (4.5%)
  • Bus or coach29 (1.5%)
  • Goods vehicle over 3.5 tonnes27 (1.4%)
  • Other35 (1.8%)
  • Not recorded6 (0.3%)

Casualties by age

  • 0 to 530 (2.2%)
  • 6 to 1032 (2.4%)
  • 11 to 1575 (5.6%)
  • 16 to 20312 (23%)
  • 21 to 25204 (15%)
  • 26 to 35195 (15%)
  • 36 to 45172 (13%)
  • 46 to 55103 (7.7%)
  • 56 to 6577 (5.7%)
  • 66 to 7557 (4.2%)
  • Over 7551 (3.8%)
  • Not recorded35 (2.6%)

Drivers, passengers and pedestrians

  • Driver or rider866 (64%)
  • Passenger293 (22%)
  • Pedestrian184 (14%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A4128

Map of the 25 most recent crashes on the A4128

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

A4128 crashes by council area

Of the 1,005 collisions on the A4128, 1,001 were in Buckinghamshire.

Collisions on the A4128 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stBuckinghamshire1,0011,33924197

A4128 crashes by town

Collisions on the A4128 were recorded in 4 towns and built-up areas, led by High Wycombe (350) and Prestwood and Great Missenden (275).

Recent crashes on the A4128

These are the 25 most recent collisions on the A4128, from 29 January 2023 to 23 December 2025.

Severity