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CrashStats

B363 accidents: crash map and statistics

Police recorded 321 collisions on the B363 from 1979 to 2025, with 392 casualties. Of those crashes, 2 were fatal and 40 serious, and 2 people were killed.

In 2025 there were 8 collisions on the B363, up 167% from 3 in 2024, with 9 casualties.

Collisions since 1979
321
2,596th highest of 4,923 roads
Casualties
392
1.22 per collision
Fatal collisions
2
2 people killed
Serious collisions
40
43 seriously injured
Collisions in 2025
8
Up 167% on 2024
Casualties in 2025
9
Up 200% on 2024

Crash severity on the B363

On the B363, 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%
  • Slight27987%

Where the B363 ranks among 4,923 roads

Most collisions
2,596th
Most casualties
2,754th
Most fatal collisions
3,485th
Most serious collisions
3,266th

B363 accidents by year

Collisions on the B363 peaked at 18 in 1979 and were down to 8 in 2025.

Collisions and casualties on the B363, 1979 to 2025

  • Collisions
  • Collisions in 2025: 8
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202589
202433
202333
202233
202122
202045
201977
2018810
20171012
201633
201555
201444
201333
201233
201155
201045
200945
200811
2007510
200644
200599
200489
20031012
200233
200145
20001116
199978
199859
199755
19961011
1995910
199444
1993912
1992714
199155
1990810
1989911
198866
1987911
19861113
1985710
19841011
1983812
19821620
19811114
19801316
19791824

When crashes happen on the B363

Friday has the most collisions on the B363 (57), and 3pm to 6pm is the busiest time of day (76).

Collisions by day of the week

  • Monday44 (14%)
  • Tuesday44 (14%)
  • Wednesday44 (14%)
  • Thursday56 (17%)
  • Friday57 (18%)
  • Saturday39 (12%)
  • Sunday37 (12%)

Collisions by time of day

  • Midnight to 3am11 (3.4%)
  • 3am to 6am3 (0.9%)
  • 6am to 9am50 (16%)
  • 9am to noon45 (14%)
  • Noon to 3pm53 (17%)
  • 3pm to 6pm76 (24%)
  • 6pm to 9pm59 (18%)
  • 9pm to midnight24 (7.5%)

Collisions by month

  • January23 (7.2%)
  • February25 (7.8%)
  • March31 (9.7%)
  • April26 (8.1%)
  • May24 (7.5%)
  • June31 (9.7%)
  • July24 (7.5%)
  • August16 (5%)
  • September22 (6.9%)
  • October33 (10%)
  • November30 (9.3%)
  • December36 (11%)

Light conditions at the time

  • Daylight227 (71%)
  • Dark, street lights lit87 (27%)
  • Dark, street lights unlit4 (1.2%)
  • Dark, lighting unknown3 (0.9%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B363 crashes

On the B363, 93% of collisions happened where the speed limit was 30 mph and 73% on a dry road surface.

Speed limit at the scene

  • 20 mph22 (6.9%)
  • 30 mph298 (93%)
  • 40 mph1 (0.3%)

Weather at the time

  • Fine, no high winds215 (67%)
  • Raining, no high winds44 (14%)
  • Fine with high winds3 (0.9%)
  • Raining with high winds3 (0.9%)
  • Other48 (15%)
  • Not recorded8 (2.5%)

Road surface

  • Dry235 (73%)
  • Wet or damp80 (25%)
  • Frost or ice4 (1.2%)
  • Snow2 (0.6%)

Type of road

  • Single carriageway253 (79%)
  • Roundabout29 (9%)
  • Dual carriageway5 (1.6%)
  • One way street or slip road2 (0.6%)
  • Not recorded32 (10%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B363 crashes

Car occupants make up 62% of the people killed or injured on the B363, followed by motorcyclists (15%).

Casualties by road user

  • Car occupant243 (62%)
  • Motorcyclist59 (15%)
  • Pedestrian41 (10%)
  • Cyclist33 (8.4%)
  • Van occupant8 (2%)
  • Bus or coach occupant5 (1.3%)
  • Other vehicle occupant2 (0.5%)
  • Taxi or private hire car occupant1 (0.3%)

Vehicles involved

  • Car476 (77%)
  • Motorcycle60 (9.7%)
  • Pedal cycle36 (5.8%)
  • Van or goods vehicle up to 3.5 tonnes25 (4.1%)
  • Bus or coach6 (1%)
  • Other vehicle5 (0.8%)
  • Goods vehicle over 3.5 tonnes4 (0.6%)
  • Other5 (0.8%)

Casualties by age

  • 0 to 56 (1.5%)
  • 6 to 1013 (3.3%)
  • 11 to 159 (2.3%)
  • 16 to 2067 (17%)
  • 21 to 2568 (17%)
  • 26 to 3593 (24%)
  • 36 to 4546 (12%)
  • 46 to 5530 (7.7%)
  • 56 to 6527 (6.9%)
  • 66 to 7511 (2.8%)
  • Over 756 (1.5%)
  • Not recorded16 (4.1%)

Drivers, passengers and pedestrians

  • Driver or rider263 (67%)
  • Passenger88 (22%)
  • Pedestrian41 (10%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B363

Map of the 25 most recent crashes on the B363

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

  • 25 crashes
  • Serious
  • Slight

B363 crashes by council area

Of the 321 collisions on the B363, 320 were in Hounslow.

Collisions on the B363 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stHounslow320391240

B363 crashes by town

Of the 321 collisions on the B363, 277 were in the built-up area of Hounslow.

Recent crashes on the B363

These are the 25 most recent collisions on the B363, from 7 November 2019 to 13 July 2025.

Severity