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CrashStats

A4004 accidents: crash map and statistics

Police recorded 122 collisions on the A4004 from 1979 to 2021, with 139 casualties. Of those crashes, none were fatal and 14 were serious.

The last recorded collision on the A4004 was on 22 May 2021.

Collisions since 1979
122
3,831st highest of 4,923 roads
Casualties
139
1.14 per collision
Fatal collisions
0
No one killed
Serious collisions
14
15 seriously injured
Last recorded collision
22 May 2021
Busiest year
1981
10 collisions

Crash severity on the A4004

None of the 122 collisions on the A4004 were fatal, and 11% were serious (18% across Great Britain).

Collisions by severity, 1979 to 2021

  • Fatal00%
  • Serious1411%
  • Slight10889%

Where the A4004 ranks among 4,923 roads

Most collisions
3,831st
Most casualties
4,002nd
Most fatal collisions
4,444th
Most serious collisions
4,361st

A4004 accidents by year

Collisions on the A4004 peaked at 10 in 1981, and none have been recorded since 2021.

Collisions and casualties on the A4004, 1979 to 2021

  • Collisions
  • Collisions in 2021: 2
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202122
202077
201922
201800
201722
201635
201500
201433
201322
201211
201122
201022
200900
200811
200711
200622
200533
200411
200322
200256
200123
200011
199922
199857
199722
199600
199500
199435
199311
199255
199133
199066
198911
198845
198711
198678
198533
198455
198344
198244
19811013
198068
197968

When crashes happen on the A4004

Friday has the most collisions on the A4004 (25), and 3pm to 6pm is the busiest time of day (30).

Collisions by day of the week

  • Monday16 (13%)
  • Tuesday16 (13%)
  • Wednesday16 (13%)
  • Thursday22 (18%)
  • Friday25 (20%)
  • Saturday13 (11%)
  • Sunday14 (11%)

Collisions by time of day

  • Midnight to 3am7 (5.7%)
  • 3am to 6am3 (2.5%)
  • 6am to 9am14 (11%)
  • 9am to noon12 (9.8%)
  • Noon to 3pm16 (13%)
  • 3pm to 6pm30 (25%)
  • 6pm to 9pm20 (16%)
  • 9pm to midnight20 (16%)

Collisions by month

  • January9 (7.4%)
  • February6 (4.9%)
  • March18 (15%)
  • April5 (4.1%)
  • May7 (5.7%)
  • June7 (5.7%)
  • July11 (9%)
  • August3 (2.5%)
  • September15 (12%)
  • October9 (7.4%)
  • November17 (14%)
  • December15 (12%)

Light conditions at the time

  • Daylight73 (60%)
  • Dark, street lights lit45 (37%)
  • Dark, lighting unknown4 (3.3%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A4004 crashes

On the A4004, 97% of collisions happened where the speed limit was 30 mph and 71% on a dry road surface.

Speed limit at the scene

  • 20 mph3 (2.5%)
  • 30 mph118 (97%)
  • 50 mph1 (0.8%)

Weather at the time

  • Fine, no high winds76 (62%)
  • Raining, no high winds23 (19%)
  • Snowing, no high winds3 (2.5%)
  • Raining with high winds1 (0.8%)
  • Other16 (13%)
  • Not recorded3 (2.5%)

Road surface

  • Dry87 (71%)
  • Wet or damp31 (25%)
  • Snow3 (2.5%)
  • Not recorded1 (0.8%)

Type of road

  • Single carriageway83 (68%)
  • One way street or slip road22 (18%)
  • Dual carriageway9 (7.4%)
  • Roundabout2 (1.6%)
  • Not recorded6 (4.9%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A4004 crashes

Car occupants make up 40% of the people killed or injured on the A4004, followed by pedestrians (25%).

Casualties by road user

  • Car occupant56 (40%)
  • Pedestrian35 (25%)
  • Motorcyclist28 (20%)
  • Cyclist9 (6.5%)
  • Bus or coach occupant8 (5.8%)
  • Van occupant3 (2.2%)

Vehicles involved

  • Car147 (71%)
  • Motorcycle29 (14%)
  • Van or goods vehicle up to 3.5 tonnes13 (6.3%)
  • Pedal cycle9 (4.3%)
  • Bus or coach8 (3.8%)
  • Goods vehicle over 3.5 tonnes2 (1%)

Casualties by age

  • 0 to 53 (2.2%)
  • 6 to 105 (3.6%)
  • 11 to 153 (2.2%)
  • 16 to 2014 (10%)
  • 21 to 2526 (19%)
  • 26 to 3537 (27%)
  • 36 to 4522 (16%)
  • 46 to 5511 (7.9%)
  • 56 to 6511 (7.9%)
  • 66 to 751 (0.7%)
  • Over 752 (1.4%)
  • Not recorded4 (2.9%)

Drivers, passengers and pedestrians

  • Driver or rider77 (55%)
  • Pedestrian35 (25%)
  • Passenger27 (19%)

Source: Department for Transport, STATS19 road safety data

Map of the latest recorded crashes on the A4004

Map of the 25 latest recorded crashes on the A4004

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

  • 25 crashes
  • Serious
  • Slight

A4004 crashes by council area

Of the 122 collisions on the A4004, 121 were in Brent.

Collisions on the A4004 in each area, 1979 to 2021
RankAreaCollisionsCasualtiesFatalSerious
1stBrent121138014

A4004 crashes by town

Of the 122 collisions on the A4004, 98 were in the built-up area of Brent.

Latest recorded crashes on the A4004

These are the 25 latest recorded collisions on the A4004, from 26 December 2010 to 22 May 2021.

Severity