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CrashStats

A4154 accidents: crash map and statistics

Police recorded 114 collisions on the A4154 from 1979 to 2025, with 155 casualties. Of those crashes, 1 was fatal and 20 serious, and 1 person was killed.

In 2025 there was 1 collision on the A4154, up from none in 2024, with 1 casualty.

Collisions since 1979
114
3,903rd highest of 4,923 roads
Casualties
155
1.36 per collision
Fatal collisions
1
1 person killed
Serious collisions
20
23 seriously injured
Collisions in 2025
1
Up from none in 2024
Casualties in 2025
1
Up from none in 2024

Crash severity on the A4154

On the A4154, 0.9% of collisions were fatal and 18% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal10.9%
  • Serious2018%
  • Slight9382%

Where the A4154 ranks among 4,923 roads

Most collisions
3,903rd
Most casualties
3,890th
Most fatal collisions
3,933rd
Most serious collisions
4,033rd

A4154 accidents by year

Collisions on the A4154 peaked at 6 in 1996 and were down to 1 in 2025.

Collisions and casualties on the A4154, 1979 to 2025

  • Collisions
  • Collisions in 2025: 1
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202511
202400
202311
202233
202122
202014
201911
201847
201733
201611
201533
201423
201313
201244
201124
201034
200933
200833
200723
200622
200544
200422
200311
200237
200157
200011
199922
199848
199711
199668
199511
199434
199358
199246
199155
1990610
198911
198822
198766
198637
198568
198400
198300
198200
198100
198000
197911

When crashes happen on the A4154

Monday has the most collisions on the A4154 (20), and 3pm to 6pm is the busiest time of day (35).

Collisions by day of the week

  • Monday20 (18%)
  • Tuesday18 (16%)
  • Wednesday16 (14%)
  • Thursday20 (18%)
  • Friday17 (15%)
  • Saturday18 (16%)
  • Sunday5 (4.4%)

Collisions by time of day

  • Midnight to 3am2 (1.8%)
  • 3am to 6am1 (0.9%)
  • 6am to 9am15 (13%)
  • 9am to noon21 (18%)
  • Noon to 3pm15 (13%)
  • 3pm to 6pm35 (31%)
  • 6pm to 9pm17 (15%)
  • 9pm to midnight8 (7%)

Collisions by month

  • January14 (12%)
  • February5 (4.4%)
  • March4 (3.5%)
  • April5 (4.4%)
  • May9 (7.9%)
  • June11 (9.6%)
  • July6 (5.3%)
  • August5 (4.4%)
  • September15 (13%)
  • October8 (7%)
  • November16 (14%)
  • December16 (14%)

Light conditions at the time

  • Daylight78 (68%)
  • Dark, street lights lit34 (30%)
  • Dark, lighting unknown1 (0.9%)
  • Dark, no street lighting1 (0.9%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A4154 crashes

On the A4154, 98% of collisions happened where the speed limit was 30 mph and 66% on a dry road surface.

Speed limit at the scene

  • 30 mph112 (98%)
  • 40 mph1 (0.9%)
  • 60 mph1 (0.9%)

Weather at the time

  • Fine, no high winds88 (77%)
  • Raining, no high winds14 (12%)
  • Fine with high winds4 (3.5%)
  • Raining with high winds3 (2.6%)
  • Fog or mist1 (0.9%)
  • Other4 (3.5%)

Road surface

  • Dry75 (66%)
  • Wet or damp35 (31%)
  • Frost or ice2 (1.8%)
  • Snow1 (0.9%)
  • Not recorded1 (0.9%)

Type of road

  • Single carriageway89 (78%)
  • Roundabout22 (19%)
  • Dual carriageway2 (1.8%)
  • Not recorded1 (0.9%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A4154 crashes

Car occupants make up 48% of the people killed or injured on the A4154, followed by pedestrians (25%).

Casualties by road user

  • Car occupant74 (48%)
  • Pedestrian39 (25%)
  • Cyclist20 (13%)
  • Motorcyclist17 (11%)
  • Van occupant3 (1.9%)
  • Bus or coach occupant2 (1.3%)

Vehicles involved

  • Car145 (73%)
  • Pedal cycle20 (10%)
  • Motorcycle14 (7%)
  • Van or goods vehicle up to 3.5 tonnes12 (6%)
  • Goods vehicle over 3.5 tonnes4 (2%)
  • Bus or coach3 (1.5%)
  • Taxi or private hire car1 (0.5%)

Casualties by age

  • 0 to 53 (1.9%)
  • 6 to 109 (5.8%)
  • 11 to 159 (5.8%)
  • 16 to 2035 (23%)
  • 21 to 2513 (8.4%)
  • 26 to 3517 (11%)
  • 36 to 4522 (14%)
  • 46 to 5515 (9.7%)
  • 56 to 6515 (9.7%)
  • 66 to 753 (1.9%)
  • Over 759 (5.8%)
  • Not recorded5 (3.2%)

Drivers, passengers and pedestrians

  • Driver or rider79 (51%)
  • Pedestrian39 (25%)
  • Passenger37 (24%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A4154

Map of the 25 most recent crashes on the A4154

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

A4154 crashes by council area

Of the 114 collisions on the A4154, 111 were in Buckinghamshire.

Collisions on the A4154 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stBuckinghamshire111152120

A4154 crashes by town

Of the 114 collisions on the A4154, 111 were in the built-up area of Amersham.

Recent crashes on the A4154

These are the 25 most recent collisions on the A4154, from 1 November 2012 to 1 December 2025.

Severity