Skip to main content
CrashStats

B483 accidents: crash map and statistics

Police recorded 344 collisions on the B483 from 1979 to 2025, with 417 casualties. Of those crashes, 2 were fatal and 40 serious, and 2 people were killed.

In 2025 there was 1 collision on the B483, down 91% from 11 in 2024, with 2 casualties.

Collisions since 1979
344
2,513th highest of 4,923 roads
Casualties
417
1.21 per collision
Fatal collisions
2
2 people killed
Serious collisions
40
43 seriously injured
Collisions in 2025
1
Down 91% on 2024
Casualties in 2025
2
Down 82% on 2024

Crash severity on the B483

On the B483, 0.6% of collisions were fatal and 12% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal20.6%
  • Serious4012%
  • Slight30288%

Where the B483 ranks among 4,923 roads

Most collisions
2,513th
Most casualties
2,659th
Most fatal collisions
3,485th
Most serious collisions
3,266th

B483 accidents by year

Collisions on the B483 peaked at 14 in 1989 and were down to 1 in 2025.

Collisions and casualties on the B483, 1979 to 2025

  • Collisions
  • Collisions in 2025: 1
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202512
20241111
202358
202244
202177
202067
201945
201833
2017812
201699
201555
201469
201328
201233
201111
2010813
200945
2008910
200722
2006511
200566
2004811
200388
200267
200146
20001112
1999810
199833
19971315
199699
19951317
199477
199379
1992910
19911113
19901214
19891415
198889
19871315
1986911
19851011
198488
1983914
1982912
1981810
1980911
197999

When crashes happen on the B483

Monday has the most collisions on the B483 (62), and 3pm to 6pm is the busiest time of day (89).

Collisions by day of the week

  • Monday62 (18%)
  • Tuesday62 (18%)
  • Wednesday43 (13%)
  • Thursday59 (17%)
  • Friday59 (17%)
  • Saturday42 (12%)
  • Sunday17 (4.9%)

Collisions by time of day

  • Midnight to 3am11 (3.2%)
  • 3am to 6am6 (1.7%)
  • 6am to 9am30 (8.7%)
  • 9am to noon57 (17%)
  • Noon to 3pm71 (21%)
  • 3pm to 6pm89 (26%)
  • 6pm to 9pm47 (14%)
  • 9pm to midnight33 (9.6%)

Collisions by month

  • January38 (11%)
  • February34 (9.9%)
  • March19 (5.5%)
  • April23 (6.7%)
  • May30 (8.7%)
  • June32 (9.3%)
  • July28 (8.1%)
  • August33 (9.6%)
  • September27 (7.8%)
  • October28 (8.1%)
  • November28 (8.1%)
  • December24 (7%)

Light conditions at the time

  • Daylight251 (73%)
  • Dark, street lights lit88 (26%)
  • Dark, street lights unlit4 (1.2%)
  • Dark, lighting unknown1 (0.3%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B483 crashes

On the B483, 83% of collisions happened where the speed limit was 30 mph and 70% on a dry road surface.

Speed limit at the scene

  • 20 mph1 (0.3%)
  • 30 mph287 (83%)
  • 40 mph53 (15%)
  • 50 mph1 (0.3%)
  • 60 mph2 (0.6%)

Weather at the time

  • Fine, no high winds259 (75%)
  • Raining, no high winds44 (13%)
  • Fine with high winds2 (0.6%)
  • Fog or mist2 (0.6%)
  • Other34 (9.9%)
  • Not recorded3 (0.9%)

Road surface

  • Dry242 (70%)
  • Wet or damp97 (28%)
  • Frost or ice1 (0.3%)
  • Snow1 (0.3%)
  • Not recorded3 (0.9%)

Type of road

  • Single carriageway150 (44%)
  • Dual carriageway91 (26%)
  • Roundabout85 (25%)
  • One way street or slip road1 (0.3%)
  • Not recorded17 (4.9%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B483 crashes

Car occupants make up 56% of the people killed or injured on the B483, followed by motorcyclists (17%).

Casualties by road user

  • Car occupant235 (56%)
  • Motorcyclist72 (17%)
  • Pedestrian53 (13%)
  • Cyclist40 (9.6%)
  • Bus or coach occupant7 (1.7%)
  • Van occupant5 (1.2%)
  • Taxi or private hire car occupant4 (1%)
  • Other vehicle occupant1 (0.2%)

Vehicles involved

  • Car450 (72%)
  • Motorcycle78 (13%)
  • Pedal cycle41 (6.6%)
  • Van or goods vehicle up to 3.5 tonnes24 (3.9%)
  • Bus or coach17 (2.7%)
  • Taxi or private hire car5 (0.8%)
  • Goods vehicle over 3.5 tonnes3 (0.5%)
  • Other3 (0.5%)

Casualties by age

  • 0 to 54 (1%)
  • 6 to 107 (1.7%)
  • 11 to 1516 (3.8%)
  • 16 to 2090 (22%)
  • 21 to 2560 (14%)
  • 26 to 3589 (21%)
  • 36 to 4558 (14%)
  • 46 to 5528 (6.7%)
  • 56 to 6524 (5.8%)
  • 66 to 759 (2.2%)
  • Over 7511 (2.6%)
  • Not recorded21 (5%)

Drivers, passengers and pedestrians

  • Driver or rider281 (67%)
  • Passenger83 (20%)
  • Pedestrian53 (13%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B483

Map of the 25 most recent crashes on the B483

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

  • 25 crashes
  • Serious
  • Slight

B483 crashes by council area

Of the 344 collisions on the B483, 341 were in Hillingdon.

Collisions on the B483 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stHillingdon341413240

B483 crashes by town

Of the 344 collisions on the B483, 315 were in the built-up area of Hillingdon.

Recent crashes on the B483

These are the 25 most recent collisions on the B483, from 3 August 2021 to 27 November 2025.

Severity