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CrashStats

A40 accidents: crash map and statistics

Police recorded 48,773 collisions on the A40 from 1979 to 2025, with 64,489 casualties. Of those crashes, 1,008 were fatal and 8,897 serious, and 1,125 people were killed.

In 2025 there were 449 collisions on the A40, up 11% from 403 in 2024, with 568 casualties.

Live A40 closures, incidents and roadworks are checked every 5 minutes.

Collisions since 1979
48,773
4th highest of 4,923 roads
Casualties
64,489
1.32 per collision
Fatal collisions
1,008
1,125 people killed
Serious collisions
8,897
10,954 seriously injured
Collisions in 2025
449
Up 11% on 2024
Casualties in 2025
568
Up 7% on 2024

Crash severity on the A40

On the A40, 2.1% of collisions were fatal and 18% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal1,0082.1%
  • Serious8,89718%
  • Slight38,86880%

Where the A40 ranks among 4,923 roads

Most collisions
4th
Most casualties
5th
Most fatal collisions
5th
Most serious collisions
3rd

A40 accidents by year

Collisions on the A40 peaked at 1,677 in 1984 and were down to 449 in 2025.

Collisions and casualties on the A40, 1979 to 2025

  • Collisions
  • Collisions in 2025: 449
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
2025449568
2024403530
2023430552
2022424550
2021385495
2020394501
2019550732
2018524682
2017563754
2016591739
2015666882
2014670913
2013665912
2012674948
2011663863
2010680956
2009729987
2008742966
20078071,099
20068571,208
20059081,246
20041,0221,377
20031,0481,397
20021,0781,475
20011,1771,627
20001,2091,623
19991,4091,823
19981,2901,728
19971,3741,807
19961,3031,750
19951,2441,679
19941,2101,641
19931,2261,655
19921,2971,733
19911,3811,805
19901,5081,977
19891,5702,032
19881,5191,967
19871,4921,893
19861,5912,082
19851,5542,024
19841,6772,109
19831,5492,005
19821,5522,007
19811,5562,075
19801,5131,965
19791,6502,150

When crashes happen on the A40

Friday has the most collisions on the A40 (8,139), and 3pm to 6pm is the busiest time of day (10,918).

Collisions by day of the week

  • Monday6,959 (14%)
  • Tuesday7,055 (14%)
  • Wednesday7,261 (15%)
  • Thursday7,415 (15%)
  • Friday8,139 (17%)
  • Saturday6,543 (13%)
  • Sunday5,401 (11%)

Collisions by time of day

  • Midnight to 3am2,201 (4.5%)
  • 3am to 6am1,161 (2.4%)
  • 6am to 9am5,802 (12%)
  • 9am to noon7,398 (15%)
  • Noon to 3pm9,005 (18%)
  • 3pm to 6pm10,918 (22%)
  • 6pm to 9pm7,722 (16%)
  • 9pm to midnight4,566 (9.4%)

Collisions by month

  • January3,623 (7.4%)
  • February3,401 (7%)
  • March3,909 (8%)
  • April3,788 (7.8%)
  • May4,044 (8.3%)
  • June4,036 (8.3%)
  • July4,537 (9.3%)
  • August4,434 (9.1%)
  • September4,113 (8.4%)
  • October4,520 (9.3%)
  • November4,350 (8.9%)
  • December4,018 (8.2%)

Light conditions at the time

  • Daylight34,509 (71%)
  • Dark, street lights lit10,932 (22%)
  • Dark, no street lighting2,819 (5.8%)
  • Dark, lighting unknown330 (0.7%)
  • Dark, street lights unlit157 (0.3%)
  • Not recorded26 (0.1%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A40 crashes

On the A40, 48% of collisions happened where the speed limit was 30 mph and 73% on a dry road surface.

Speed limit at the scene

  • 10 mph4 (under 0.1%)
  • 20 mph684 (1.4%)
  • 30 mph23,345 (48%)
  • 40 mph7,071 (14%)
  • 50 mph3,373 (6.9%)
  • 60 mph8,746 (18%)
  • 70 mph5,512 (11%)
  • Not recorded38 (0.1%)

Weather at the time

  • Fine, no high winds37,505 (77%)
  • Raining, no high winds5,991 (12%)
  • Raining with high winds620 (1.3%)
  • Fine with high winds529 (1.1%)
  • Other3,617 (7.4%)
  • Not recorded511 (1%)

Road surface

  • Dry35,413 (73%)
  • Wet or damp12,309 (25%)
  • Frost or ice569 (1.2%)
  • Snow215 (0.4%)
  • Other103 (0.2%)
  • Not recorded164 (0.3%)

Type of road

  • Single carriageway24,603 (50%)
  • Dual carriageway15,730 (32%)
  • Roundabout4,384 (9%)
  • One way street or slip road3,142 (6.4%)
  • Not recorded914 (1.9%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A40 crashes

Car occupants make up 54% of the people killed or injured on the A40, followed by pedestrians (14%).

Casualties by road user

  • Car occupant34,686 (54%)
  • Pedestrian8,753 (14%)
  • Motorcyclist8,727 (14%)
  • Cyclist4,630 (7.2%)
  • Bus or coach occupant3,356 (5.2%)
  • Van occupant1,964 (3%)
  • Other2,358 (3.7%)
  • Not recorded15 (under 0.1%)

Vehicles involved

  • Car56,711 (63%)
  • Motorcycle9,658 (11%)
  • Pedal cycle5,015 (5.6%)
  • Van or goods vehicle up to 3.5 tonnes5,001 (5.6%)
  • Bus or coach4,971 (5.6%)
  • Goods vehicle over 3.5 tonnes3,849 (4.3%)
  • Other4,130 (4.6%)
  • Not recorded51 (0.1%)

Casualties by age

  • 0 to 5746 (1.2%)
  • 6 to 101,073 (1.7%)
  • 11 to 151,780 (2.8%)
  • 16 to 208,197 (13%)
  • 21 to 259,893 (15%)
  • 26 to 3514,806 (23%)
  • 36 to 459,530 (15%)
  • 46 to 556,771 (10%)
  • 56 to 654,642 (7.2%)
  • 66 to 752,724 (4.2%)
  • Over 751,709 (2.7%)
  • Not recorded2,618 (4.1%)

Drivers, passengers and pedestrians

  • Driver or rider38,131 (59%)
  • Passenger17,605 (27%)
  • Pedestrian8,753 (14%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A40

Map of the 25 most recent crashes on the A40

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

  • 25 crashes
  • Serious
  • Slight

A40 crashes by council area

Collisions on the A40 were recorded in 22 council areas. Westminster has the most, with 8,660, followed by Ealing (7,037) and Buckinghamshire (4,999).

Collisions on the A40 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stWestminster8,6609,702631,360
2ndEaling7,0379,289124950
3rdBuckinghamshire4,9996,68278892
4thCamden2,8533,13013370
5thCarmarthenshire2,6914,276107769
6thHammersmith and Fulham2,5543,03942377
7thCheltenham2,2832,79126450
8thHillingdon1,9152,69935307
9thPembrokeshire1,9043,11975545
10thKensington and Chelsea1,8882,14115319
11thWest Oxfordshire1,6032,52768312
12thMonmouthshire1,3892,18449320
13thOxford1,3421,72524203
14thPowys1,2551,97460365
15thCity of London1,2141,3342152
16thHerefordshire1,0081,53043225
17thCotswold1,0051,72075265
18thGloucester8691,1759167
19thTewkesbury8121,12620157
20thSouth Oxfordshire7721,15244218
21stForest of Dean49679423118
22ndCherwell1843311347

A40 crashes by town

Collisions on the A40 were recorded in 28 towns and built-up areas, led by City of Westminster (7,234) and Ealing (3,531).

Recent crashes on the A40

These are the 25 most recent collisions on the A40, from 10 December to 30 December 2025.

Severity