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CrashStats

A4000 accidents: crash map and statistics

Police recorded 3,110 collisions on the A4000 from 1979 to 2025, with 3,619 casualties. Of those crashes, 21 were fatal and 455 serious, and 22 people were killed.

In 2025 there were 49 collisions on the A4000, down 2% from 50 in 2024, with 57 casualties.

Collisions since 1979
3,110
371st highest of 4,923 roads
Casualties
3,619
1.16 per collision
Fatal collisions
21
22 people killed
Serious collisions
455
492 seriously injured
Collisions in 2025
49
Down 2% on 2024
Casualties in 2025
57
Up 6% on 2024

Crash severity on the A4000

On the A4000, 0.7% of collisions were fatal and 15% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal210.7%
  • Serious45515%
  • Slight2,63485%

Where the A4000 ranks among 4,923 roads

Most collisions
371st
Most casualties
433rd
Most fatal collisions
938th
Most serious collisions
472nd

A4000 accidents by year

Collisions on the A4000 peaked at 96 in 1983 and were down to 49 in 2025.

Collisions and casualties on the A4000, 1979 to 2025

  • Collisions
  • Collisions in 2025: 49
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20254957
20245054
20235969
20224650
20215258
20205060
20196880
20185363
20174657
20165472
20155965
20144753
20134750
20124962
20114446
20104857
20095054
20084551
20074450
20065155
20056170
20047691
20036380
20027280
20018293
20007893
19996783
19987787
199791107
19968196
19957488
19948093
19938394
19927177
19918497
19907483
198984100
19886876
19877186
198687104
19857998
19847692
198396110
19827083
19817785
198087101
197990109

When crashes happen on the A4000

Friday has the most collisions on the A4000 (548), and 3pm to 6pm is the busiest time of day (713).

Collisions by day of the week

  • Monday453 (15%)
  • Tuesday468 (15%)
  • Wednesday460 (15%)
  • Thursday477 (15%)
  • Friday548 (18%)
  • Saturday398 (13%)
  • Sunday306 (9.8%)

Collisions by time of day

  • Midnight to 3am114 (3.7%)
  • 3am to 6am53 (1.7%)
  • 6am to 9am413 (13%)
  • 9am to noon432 (14%)
  • Noon to 3pm551 (18%)
  • 3pm to 6pm713 (23%)
  • 6pm to 9pm528 (17%)
  • 9pm to midnight306 (9.8%)

Collisions by month

  • January247 (7.9%)
  • February229 (7.4%)
  • March247 (7.9%)
  • April237 (7.6%)
  • May225 (7.2%)
  • June272 (8.7%)
  • July284 (9.1%)
  • August234 (7.5%)
  • September294 (9.5%)
  • October289 (9.3%)
  • November282 (9.1%)
  • December270 (8.7%)

Light conditions at the time

  • Daylight2,165 (70%)
  • Dark, street lights lit914 (29%)
  • Dark, lighting unknown19 (0.6%)
  • Dark, street lights unlit9 (0.3%)
  • Dark, no street lighting3 (0.1%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A4000 crashes

On the A4000, 89% of collisions happened where the speed limit was 30 mph and 77% on a dry road surface.

Speed limit at the scene

  • 20 mph249 (8%)
  • 30 mph2,777 (89%)
  • 40 mph80 (2.6%)
  • 50 mph2 (0.1%)
  • 70 mph2 (0.1%)

Weather at the time

  • Fine, no high winds2,347 (75%)
  • Raining, no high winds391 (13%)
  • Fine with high winds24 (0.8%)
  • Raining with high winds24 (0.8%)
  • Other280 (9%)
  • Not recorded44 (1.4%)

Road surface

  • Dry2,385 (77%)
  • Wet or damp656 (21%)
  • Frost or ice20 (0.6%)
  • Snow11 (0.4%)
  • Flood over 3cm deep3 (0.1%)
  • Not recorded35 (1.1%)

Type of road

  • Single carriageway2,361 (76%)
  • Dual carriageway261 (8.4%)
  • One way street or slip road214 (6.9%)
  • Roundabout70 (2.3%)
  • Not recorded204 (6.6%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A4000 crashes

Car occupants make up 38% of the people killed or injured on the A4000, followed by pedestrians (23%).

Casualties by road user

  • Car occupant1,392 (38%)
  • Pedestrian840 (23%)
  • Motorcyclist679 (19%)
  • Cyclist438 (12%)
  • Bus or coach occupant130 (3.6%)
  • Van occupant92 (2.5%)
  • Other46 (1.3%)
  • Not recorded2 (0.1%)

Vehicles involved

  • Car3,486 (64%)
  • Motorcycle736 (14%)
  • Pedal cycle444 (8.2%)
  • Van or goods vehicle up to 3.5 tonnes336 (6.2%)
  • Bus or coach193 (3.6%)
  • Goods vehicle over 3.5 tonnes117 (2.2%)
  • Other93 (1.7%)
  • Not recorded1 (under 0.1%)

Casualties by age

  • 0 to 551 (1.4%)
  • 6 to 1085 (2.3%)
  • 11 to 15188 (5.2%)
  • 16 to 20323 (8.9%)
  • 21 to 25537 (15%)
  • 26 to 35958 (26%)
  • 36 to 45567 (16%)
  • 46 to 55336 (9.3%)
  • 56 to 65201 (5.6%)
  • 66 to 75107 (3%)
  • Over 7570 (1.9%)
  • Not recorded196 (5.4%)

Drivers, passengers and pedestrians

  • Driver or rider2,131 (59%)
  • Pedestrian840 (23%)
  • Passenger648 (18%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A4000

Map of the 25 most recent crashes on the A4000

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

  • 25 crashes
  • Serious
  • Slight

A4000 crashes by council area

Collisions on the A4000 were recorded in 4 council areas. Ealing has the most, with 2,337, followed by Brent (756) and Hounslow (6).

Collisions on the A4000 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stEaling2,3372,73517354
2ndBrent756862399
3rdHounslow6700
4thBristol3410

A4000 crashes by town

Collisions on the A4000 were recorded in 3 towns and built-up areas, led by Ealing (2,101) and Brent (665).

Recent crashes on the A4000

These are the 25 most recent collisions on the A4000, from 3 August to 24 December 2025.

Severity