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CrashStats

B463 accidents: crash map and statistics

Police recorded 63 collisions on the B463 from 1979 to 2025, with 70 casualties. Of those crashes, none were fatal and 7 were serious.

In 2025 there was 1 collision on the B463, up from none in 2024, with 1 casualty.

Collisions since 1979
63
4,445th highest of 4,923 roads
Casualties
70
1.11 per collision
Fatal collisions
0
No one killed
Serious collisions
7
7 seriously injured
Collisions in 2025
1
Up from none in 2024
Casualties in 2025
1
Up from none in 2024

Crash severity on the B463

None of the 63 collisions on the B463 were fatal, and 11% were serious (18% across Great Britain).

Collisions by severity, 1979 to 2025

  • Fatal00%
  • Serious711%
  • Slight5689%

Where the B463 ranks among 4,923 roads

Most collisions
4,445th
Most casualties
4,580th
Most fatal collisions
4,444th
Most serious collisions
4,768th

B463 accidents by year

Collisions on the B463 peaked at 5 in 1997 and were down to 1 in 2025.

Collisions and casualties on the B463, 1979 to 2025

  • Collisions
  • Collisions in 2025: 1
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202511
202400
202300
202200
202133
202000
201911
201800
201700
201600
201500
201412
201300
201211
201111
201000
200900
200800
200722
200611
200511
200433
200311
200211
200122
200011
199923
199811
199756
199611
199514
199444
199300
199211
199144
199033
198911
198800
198722
198622
198522
198456
198311
198222
198122
198011
197933

When crashes happen on the B463

Saturday has the most collisions on the B463 (12), and noon to 3pm is the busiest time of day (14).

Collisions by day of the week

  • Monday6 (9.5%)
  • Tuesday10 (16%)
  • Wednesday9 (14%)
  • Thursday9 (14%)
  • Friday9 (14%)
  • Saturday12 (19%)
  • Sunday8 (13%)

Collisions by time of day

  • Midnight to 3am5 (7.9%)
  • 3am to 6am1 (1.6%)
  • 6am to 9am9 (14%)
  • 9am to noon7 (11%)
  • Noon to 3pm14 (22%)
  • 3pm to 6pm9 (14%)
  • 6pm to 9pm11 (17%)
  • 9pm to midnight7 (11%)

Collisions by month

  • January4 (6.3%)
  • February4 (6.3%)
  • March5 (7.9%)
  • April5 (7.9%)
  • May4 (6.3%)
  • June9 (14%)
  • July4 (6.3%)
  • August4 (6.3%)
  • September1 (1.6%)
  • October9 (14%)
  • November6 (9.5%)
  • December8 (13%)

Light conditions at the time

  • Daylight42 (67%)
  • Dark, street lights lit20 (32%)
  • Dark, lighting unknown1 (1.6%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B463 crashes

On the B463, 98% of collisions happened where the speed limit was 30 mph and 68% on a dry road surface.

Speed limit at the scene

  • 20 mph1 (1.6%)
  • 30 mph62 (98%)

Weather at the time

  • Fine, no high winds46 (73%)
  • Raining, no high winds9 (14%)
  • Fine with high winds1 (1.6%)
  • Other5 (7.9%)
  • Not recorded2 (3.2%)

Road surface

  • Dry43 (68%)
  • Wet or damp18 (29%)
  • Frost or ice1 (1.6%)
  • Snow1 (1.6%)

Type of road

  • Single carriageway56 (89%)
  • One way street or slip road2 (3.2%)
  • Not recorded5 (7.9%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B463 crashes

Car occupants make up 56% of the people killed or injured on the B463, followed by pedestrians (26%).

Casualties by road user

  • Car occupant39 (56%)
  • Pedestrian18 (26%)
  • Motorcyclist6 (8.6%)
  • Cyclist4 (5.7%)
  • Other vehicle occupant2 (2.9%)
  • Van occupant1 (1.4%)

Vehicles involved

  • Car78 (81%)
  • Motorcycle5 (5.2%)
  • Pedal cycle5 (5.2%)
  • Van or goods vehicle up to 3.5 tonnes5 (5.2%)
  • Other vehicle2 (2.1%)
  • Goods vehicle over 3.5 tonnes1 (1%)

Casualties by age

  • 0 to 51 (1.4%)
  • 6 to 102 (2.9%)
  • 11 to 155 (7.1%)
  • 16 to 2017 (24%)
  • 21 to 258 (11%)
  • 26 to 3513 (19%)
  • 36 to 454 (5.7%)
  • 46 to 558 (11%)
  • 56 to 653 (4.3%)
  • 66 to 753 (4.3%)
  • Over 753 (4.3%)
  • Not recorded3 (4.3%)

Drivers, passengers and pedestrians

  • Driver or rider36 (51%)
  • Pedestrian18 (26%)
  • Passenger16 (23%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B463

Map of the 25 most recent crashes on the B463

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

  • 25 crashes
  • Serious
  • Slight

B463 crashes by council area

Of the 63 collisions on the B463, 61 were in Harrow.

Collisions on the B463 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stHarrow616807

B463 crashes by town

Of the 63 collisions on the B463, 56 were in the built-up area of Harrow.

Recent crashes on the B463

These are the 25 most recent collisions on the B463, from 27 August 1997 to 30 November 2025.

Severity