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CrashStats

A4088 accidents: crash map and statistics

Police recorded 4,243 collisions on the A4088 from 1979 to 2025, with 5,206 casualties. Of those crashes, 33 were fatal and 598 serious, and 36 people were killed.

In 2025 there were 69 collisions on the A4088, up 11% from 62 in 2024, with 78 casualties.

Collisions since 1979
4,243
255th highest of 4,923 roads
Casualties
5,206
1.23 per collision
Fatal collisions
33
36 people killed
Serious collisions
598
667 seriously injured
Collisions in 2025
69
Up 11% on 2024
Casualties in 2025
78
Up 10% on 2024

Crash severity on the A4088

On the A4088, 0.8% of collisions were fatal and 14% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal330.8%
  • Serious59814%
  • Slight3,61285%

Where the A4088 ranks among 4,923 roads

Most collisions
255th
Most casualties
287th
Most fatal collisions
619th
Most serious collisions
336th

A4088 accidents by year

Collisions on the A4088 peaked at 121 in 1983 and were down to 69 in 2025.

Collisions and casualties on the A4088, 1979 to 2025

  • Collisions
  • Collisions in 2025: 69
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20256978
20246271
20238399
20227994
20217687
20206876
20196281
201886103
201790123
201691106
201588110
201487105
201375100
201288103
20115975
20106578
20096079
20086375
20075773
20067396
200583102
20047994
200390115
200295122
2001108135
200086101
199999118
199893127
199794109
1996100126
199591111
199496113
1993110133
1992105116
1991120144
1990108143
1989104130
1988119135
1987119142
1986102124
1985103131
1984115140
1983121134
1982118160
198196118
1980111150
197997121

When crashes happen on the A4088

Friday has the most collisions on the A4088 (652), and 3pm to 6pm is the busiest time of day (903).

Collisions by day of the week

  • Monday611 (14%)
  • Tuesday621 (15%)
  • Wednesday619 (15%)
  • Thursday630 (15%)
  • Friday652 (15%)
  • Saturday600 (14%)
  • Sunday510 (12%)

Collisions by time of day

  • Midnight to 3am201 (4.7%)
  • 3am to 6am85 (2%)
  • 6am to 9am493 (12%)
  • 9am to noon576 (14%)
  • Noon to 3pm704 (17%)
  • 3pm to 6pm903 (21%)
  • 6pm to 9pm774 (18%)
  • 9pm to midnight507 (12%)

Collisions by month

  • January333 (7.8%)
  • February335 (7.9%)
  • March331 (7.8%)
  • April325 (7.7%)
  • May350 (8.2%)
  • June368 (8.7%)
  • July365 (8.6%)
  • August309 (7.3%)
  • September397 (9.4%)
  • October410 (9.7%)
  • November379 (8.9%)
  • December341 (8%)

Light conditions at the time

  • Daylight2,832 (67%)
  • Dark, street lights lit1,354 (32%)
  • Dark, lighting unknown38 (0.9%)
  • Dark, street lights unlit13 (0.3%)
  • Dark, no street lighting6 (0.1%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A4088 crashes

On the A4088, 95% of collisions happened where the speed limit was 30 mph and 76% on a dry road surface.

Speed limit at the scene

  • 20 mph89 (2.1%)
  • 30 mph4,035 (95%)
  • 40 mph108 (2.5%)
  • 50 mph7 (0.2%)
  • 60 mph3 (0.1%)
  • 70 mph1 (under 0.1%)

Weather at the time

  • Fine, no high winds3,260 (77%)
  • Raining, no high winds481 (11%)
  • Fine with high winds33 (0.8%)
  • Raining with high winds19 (0.4%)
  • Other364 (8.6%)
  • Not recorded86 (2%)

Road surface

  • Dry3,240 (76%)
  • Wet or damp910 (21%)
  • Frost or ice36 (0.8%)
  • Snow6 (0.1%)
  • Oil or diesel2 (under 0.1%)
  • Not recorded49 (1.2%)

Type of road

  • Single carriageway3,016 (71%)
  • Dual carriageway549 (13%)
  • Roundabout265 (6.2%)
  • One way street or slip road181 (4.3%)
  • Not recorded232 (5.5%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A4088 crashes

Car occupants make up 55% of the people killed or injured on the A4088, followed by pedestrians (17%).

Casualties by road user

  • Car occupant2,851 (55%)
  • Pedestrian889 (17%)
  • Motorcyclist819 (16%)
  • Cyclist252 (4.8%)
  • Bus or coach occupant191 (3.7%)
  • Van occupant119 (2.3%)
  • Other83 (1.6%)
  • Not recorded2 (under 0.1%)

Vehicles involved

  • Car5,559 (74%)
  • Motorcycle879 (12%)
  • Van or goods vehicle up to 3.5 tonnes389 (5.2%)
  • Bus or coach254 (3.4%)
  • Pedal cycle254 (3.4%)
  • Goods vehicle over 3.5 tonnes89 (1.2%)
  • Taxi or private hire car66 (0.9%)
  • Other59 (0.8%)

Casualties by age

  • 0 to 5102 (2%)
  • 6 to 10137 (2.6%)
  • 11 to 15221 (4.2%)
  • 16 to 20552 (11%)
  • 21 to 25712 (14%)
  • 26 to 351,208 (23%)
  • 36 to 45757 (15%)
  • 46 to 55535 (10%)
  • 56 to 65331 (6.4%)
  • 66 to 75184 (3.5%)
  • Over 75125 (2.4%)
  • Not recorded342 (6.6%)

Drivers, passengers and pedestrians

  • Driver or rider3,058 (59%)
  • Passenger1,259 (24%)
  • Pedestrian889 (17%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A4088

Map of the 25 most recent crashes on the A4088

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

  • 25 crashes
  • Slight

A4088 crashes by council area

Collisions on the A4088 were recorded in 2 council areas. Brent has the most, with 4,235, followed by Hertsmere (6).

Collisions on the A4088 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stBrent4,2355,19833597
2ndHertsmere6601

A4088 crashes by town

Of the 4,243 collisions on the A4088, 3,928 were in the built-up area of Brent.

Recent crashes on the A4088

These are the 25 most recent collisions on the A4088, from 26 August to 31 December 2025.