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CrashStats

A416 accidents: crash map and statistics

Police recorded 1,519 collisions on the A416 from 1979 to 2025, with 1,859 casualties. Of those crashes, 21 were fatal and 324 serious, and 23 people were killed.

In 2025 there were 11 collisions on the A416, up 22% from 9 in 2024, with 12 casualties.

Collisions since 1979
1,519
734th highest of 4,923 roads
Casualties
1,859
1.22 per collision
Fatal collisions
21
23 people killed
Serious collisions
324
356 seriously injured
Collisions in 2025
11
Up 22% on 2024
Casualties in 2025
12
Up 33% on 2024

Crash severity on the A416

On the A416, 1.4% of collisions were fatal and 21% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal211.4%
  • Serious32421%
  • Slight1,17477%

Where the A416 ranks among 4,923 roads

Most collisions
734th
Most casualties
807th
Most fatal collisions
938th
Most serious collisions
661st

A416 accidents by year

Collisions on the A416 peaked at 63 in 1988 and were down to 11 in 2025.

Collisions and casualties on the A416, 1979 to 2025

  • Collisions
  • Collisions in 2025: 11
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20251112
202499
20231313
20221214
20211618
20201011
20191922
20181111
20171112
20161623
20151822
20141720
20132128
20121824
20112935
20101620
20092130
20083137
20072429
20062936
20053444
20042432
20033752
20022630
20013849
20003846
19994050
19983850
19975360
19963749
19953949
19944151
19933542
19923949
19912835
19904555
19895568
19886380
19874754
19865563
19855162
19845570
19835868
19824959
19815261
19803135
19795970

When crashes happen on the A416

Saturday has the most collisions on the A416 (246), and 3pm to 6pm is the busiest time of day (382).

Collisions by day of the week

  • Monday217 (14%)
  • Tuesday223 (15%)
  • Wednesday226 (15%)
  • Thursday244 (16%)
  • Friday240 (16%)
  • Saturday246 (16%)
  • Sunday123 (8.1%)

Collisions by time of day

  • Midnight to 3am40 (2.6%)
  • 3am to 6am14 (0.9%)
  • 6am to 9am222 (15%)
  • 9am to noon229 (15%)
  • Noon to 3pm261 (17%)
  • 3pm to 6pm382 (25%)
  • 6pm to 9pm225 (15%)
  • 9pm to midnight146 (9.6%)

Collisions by month

  • January118 (7.8%)
  • February123 (8.1%)
  • March119 (7.8%)
  • April98 (6.5%)
  • May134 (8.8%)
  • June133 (8.8%)
  • July137 (9%)
  • August106 (7%)
  • September112 (7.4%)
  • October157 (10%)
  • November142 (9.3%)
  • December140 (9.2%)

Light conditions at the time

  • Daylight1,101 (72%)
  • Dark, street lights lit335 (22%)
  • Dark, no street lighting57 (3.8%)
  • Dark, lighting unknown20 (1.3%)
  • Dark, street lights unlit5 (0.3%)
  • Not recorded1 (0.1%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A416 crashes

On the A416, 75% of collisions happened where the speed limit was 30 mph and 65% on a dry road surface.

Speed limit at the scene

  • 20 mph1 (0.1%)
  • 30 mph1,142 (75%)
  • 40 mph177 (12%)
  • 60 mph194 (13%)
  • 70 mph5 (0.3%)

Weather at the time

  • Fine, no high winds1,182 (78%)
  • Raining, no high winds218 (14%)
  • Fine with high winds26 (1.7%)
  • Raining with high winds16 (1.1%)
  • Other58 (3.8%)
  • Not recorded19 (1.3%)

Road surface

  • Dry981 (65%)
  • Wet or damp512 (34%)
  • Frost or ice20 (1.3%)
  • Snow2 (0.1%)
  • Not recorded4 (0.3%)

Type of road

  • Single carriageway1,151 (76%)
  • Roundabout203 (13%)
  • One way street or slip road98 (6.5%)
  • Dual carriageway63 (4.1%)
  • Not recorded4 (0.3%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A416 crashes

Car occupants make up 50% of the people killed or injured on the A416, followed by pedestrians (19%).

Casualties by road user

  • Car occupant938 (50%)
  • Pedestrian345 (19%)
  • Motorcyclist329 (18%)
  • Cyclist171 (9.2%)
  • Van occupant42 (2.3%)
  • Goods vehicle occupant (over 3.5 tonnes)10 (0.5%)
  • Other23 (1.2%)
  • Not recorded1 (0.1%)

Vehicles involved

  • Car2,140 (73%)
  • Motorcycle344 (12%)
  • Pedal cycle175 (6%)
  • Van or goods vehicle up to 3.5 tonnes140 (4.8%)
  • Goods vehicle over 3.5 tonnes60 (2%)
  • Bus or coach28 (1%)
  • Other32 (1.1%)
  • Not recorded8 (0.3%)

Casualties by age

  • 0 to 531 (1.7%)
  • 6 to 1053 (2.9%)
  • 11 to 15100 (5.4%)
  • 16 to 20376 (20%)
  • 21 to 25236 (13%)
  • 26 to 35301 (16%)
  • 36 to 45255 (14%)
  • 46 to 55193 (10%)
  • 56 to 65112 (6%)
  • 66 to 7591 (4.9%)
  • Over 7567 (3.6%)
  • Not recorded44 (2.4%)

Drivers, passengers and pedestrians

  • Driver or rider1,237 (67%)
  • Pedestrian345 (19%)
  • Passenger277 (15%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A416

Map of the 25 most recent crashes on the A416

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

  • 25 crashes
  • Serious
  • Slight

A416 crashes by council area

Collisions on the A416 were recorded in 2 council areas. Buckinghamshire has the most, with 1,344, followed by Dacorum (166).

Collisions on the A416 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stBuckinghamshire1,3441,61615279
2ndDacorum166231641

A416 crashes by town

Collisions on the A416 were recorded in 3 towns and built-up areas, led by Chesham (722) and Amersham (410).

Recent crashes on the A416

These are the 25 most recent collisions on the A416, from 11 October 2023 to 25 December 2025.

Severity