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CrashStats

A4006 accidents: crash map and statistics

Police recorded 3,845 collisions on the A4006 from 1979 to 2025, with 4,755 casualties. Of those crashes, 31 were fatal and 519 serious, and 32 people were killed.

In 2025 there were 60 collisions on the A4006, down 2% from 61 in 2024, with 67 casualties.

Collisions since 1979
3,845
285th highest of 4,923 roads
Casualties
4,755
1.24 per collision
Fatal collisions
31
32 people killed
Serious collisions
519
568 seriously injured
Collisions in 2025
60
Down 2% on 2024
Casualties in 2025
67
Down 11% on 2024

Crash severity on the A4006

On the A4006, 0.8% of collisions were fatal and 13% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal310.8%
  • Serious51913%
  • Slight3,29586%

Where the A4006 ranks among 4,923 roads

Most collisions
285th
Most casualties
325th
Most fatal collisions
662nd
Most serious collisions
412th

A4006 accidents by year

Collisions on the A4006 peaked at 138 in 1986 and were down to 60 in 2025.

Collisions and casualties on the A4006, 1979 to 2025

  • Collisions
  • Collisions in 2025: 60
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20256067
20246175
20235162
20224656
20215060
20204246
20196066
20184959
20176579
20165876
20156072
20146578
20134868
20125575
20114255
20104453
20095158
20085063
20074765
20066282
20057186
20047085
200387126
20027296
200195109
2000113142
199998127
19987791
199787109
19967794
199597121
1994108126
1993114139
1992101122
1991100133
1990108142
1989119142
1988113132
1987121151
1986138161
1985111140
1984114133
1983110127
1982131168
1981131169
1980123156
197993113

When crashes happen on the A4006

Friday has the most collisions on the A4006 (660), and 3pm to 6pm is the busiest time of day (895).

Collisions by day of the week

  • Monday542 (14%)
  • Tuesday555 (14%)
  • Wednesday566 (15%)
  • Thursday558 (15%)
  • Friday660 (17%)
  • Saturday530 (14%)
  • Sunday434 (11%)

Collisions by time of day

  • Midnight to 3am141 (3.7%)
  • 3am to 6am56 (1.5%)
  • 6am to 9am498 (13%)
  • 9am to noon482 (13%)
  • Noon to 3pm607 (16%)
  • 3pm to 6pm895 (23%)
  • 6pm to 9pm714 (19%)
  • 9pm to midnight452 (12%)

Collisions by month

  • January311 (8.1%)
  • February271 (7%)
  • March298 (7.8%)
  • April302 (7.9%)
  • May317 (8.2%)
  • June304 (7.9%)
  • July313 (8.1%)
  • August285 (7.4%)
  • September383 (10%)
  • October365 (9.5%)
  • November371 (9.6%)
  • December325 (8.5%)

Light conditions at the time

  • Daylight2,596 (68%)
  • Dark, street lights lit1,218 (32%)
  • Dark, lighting unknown18 (0.5%)
  • Dark, street lights unlit10 (0.3%)
  • Dark, no street lighting3 (0.1%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A4006 crashes

On the A4006, 97% of collisions happened where the speed limit was 30 mph and 71% on a dry road surface.

Speed limit at the scene

  • 20 mph54 (1.4%)
  • 30 mph3,745 (97%)
  • 40 mph44 (1.1%)
  • 50 mph2 (0.1%)

Weather at the time

  • Fine, no high winds2,793 (73%)
  • Raining, no high winds600 (16%)
  • Fine with high winds23 (0.6%)
  • Raining with high winds14 (0.4%)
  • Other342 (8.9%)
  • Not recorded73 (1.9%)

Road surface

  • Dry2,714 (71%)
  • Wet or damp1,062 (28%)
  • Frost or ice19 (0.5%)
  • Snow14 (0.4%)
  • Flood over 3cm deep2 (0.1%)
  • Not recorded34 (0.9%)

Type of road

  • Single carriageway2,954 (77%)
  • Dual carriageway499 (13%)
  • Roundabout145 (3.8%)
  • One way street or slip road39 (1%)
  • Not recorded208 (5.4%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A4006 crashes

Car occupants make up 57% of the people killed or injured on the A4006, followed by pedestrians (19%).

Casualties by road user

  • Car occupant2,707 (57%)
  • Pedestrian902 (19%)
  • Motorcyclist578 (12%)
  • Cyclist226 (4.8%)
  • Bus or coach occupant213 (4.5%)
  • Van occupant87 (1.8%)
  • Other41 (0.9%)
  • Not recorded1 (under 0.1%)

Vehicles involved

  • Car5,441 (78%)
  • Motorcycle610 (8.8%)
  • Van or goods vehicle up to 3.5 tonnes305 (4.4%)
  • Pedal cycle233 (3.4%)
  • Bus or coach220 (3.2%)
  • Goods vehicle over 3.5 tonnes49 (0.7%)
  • Taxi or private hire car43 (0.6%)
  • Other46 (0.7%)

Casualties by age

  • 0 to 574 (1.6%)
  • 6 to 10110 (2.3%)
  • 11 to 15256 (5.4%)
  • 16 to 20618 (13%)
  • 21 to 25725 (15%)
  • 26 to 35937 (20%)
  • 36 to 45635 (13%)
  • 46 to 55430 (9%)
  • 56 to 65332 (7%)
  • 66 to 75191 (4%)
  • Over 75166 (3.5%)
  • Not recorded281 (5.9%)

Drivers, passengers and pedestrians

  • Driver or rider2,658 (56%)
  • Passenger1,195 (25%)
  • Pedestrian902 (19%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A4006

Map of the 25 most recent crashes on the A4006

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

  • 25 crashes
  • Serious
  • Slight

A4006 crashes by council area

Collisions on the A4006 were recorded in 3 council areas. Brent has the most, with 3,545, followed by Harrow (243) and Barnet (52).

Collisions on the A4006 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stBrent3,5454,37727472
2ndHarrow243308441
3rdBarnet526405

A4006 crashes by town

Collisions on the A4006 were recorded in 3 towns and built-up areas, led by Harrow (1,545) and Brent (1,195).

Recent crashes on the A4006

These are the 25 most recent collisions on the A4006, from 13 July to 19 December 2025.

Severity