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CrashStats

B523 accidents: crash map and statistics

Police recorded 304 collisions on the B523 from 1979 to 2025, with 374 casualties. Of those crashes, 3 were fatal and 58 serious, and 3 people were killed.

In 2025 there was 1 collision on the B523, level with 2024, with 1 casualty.

Collisions since 1979
304
2,668th highest of 4,923 roads
Casualties
374
1.23 per collision
Fatal collisions
3
3 people killed
Serious collisions
58
69 seriously injured
Collisions in 2025
1
Level with 2024
Casualties in 2025
1
Level with 2024

Crash severity on the B523

On the B523, 1% of collisions were fatal and 19% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal31%
  • Serious5819%
  • Slight24380%

Where the B523 ranks among 4,923 roads

Most collisions
2,668th
Most casualties
2,817th
Most fatal collisions
3,114th
Most serious collisions
2,746th

B523 accidents by year

Collisions on the B523 peaked at 26 in 1982 and were down to 1 in 2025.

Collisions and casualties on the B523, 1979 to 2025

  • Collisions
  • Collisions in 2025: 1
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202511
202411
202300
202222
202100
202000
201922
201800
201722
201600
201500
201411
201300
201200
201111
201011
200912
200822
200711
200600
200500
200400
200300
200200
200111
200023
199922
199822
199700
199600
199524
199400
19931722
19921722
19911011
19901314
19892529
19881825
19872224
19862431
19851724
19842530
19832531
19822636
19811620
19801415
19791112

When crashes happen on the B523

Tuesday has the most collisions on the B523 (60), and 3pm to 6pm is the busiest time of day (69).

Collisions by day of the week

  • Monday46 (15%)
  • Tuesday60 (20%)
  • Wednesday46 (15%)
  • Thursday49 (16%)
  • Friday45 (15%)
  • Saturday35 (12%)
  • Sunday23 (7.6%)

Collisions by time of day

  • Midnight to 3am19 (6.3%)
  • 3am to 6am5 (1.6%)
  • 6am to 9am32 (11%)
  • 9am to noon48 (16%)
  • Noon to 3pm64 (21%)
  • 3pm to 6pm69 (23%)
  • 6pm to 9pm46 (15%)
  • 9pm to midnight21 (6.9%)

Collisions by month

  • January20 (6.6%)
  • February28 (9.2%)
  • March21 (6.9%)
  • April26 (8.6%)
  • May27 (8.9%)
  • June27 (8.9%)
  • July29 (9.5%)
  • August25 (8.2%)
  • September24 (7.9%)
  • October25 (8.2%)
  • November32 (11%)
  • December20 (6.6%)

Light conditions at the time

  • Daylight222 (73%)
  • Dark, street lights lit82 (27%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B523 crashes

On the B523, 99% of collisions happened where the speed limit was 30 mph and 81% on a dry road surface.

Speed limit at the scene

  • 20 mph1 (0.3%)
  • 30 mph301 (99%)
  • 60 mph2 (0.7%)

Weather at the time

  • Fine, no high winds217 (71%)
  • Raining, no high winds35 (12%)
  • Raining with high winds4 (1.3%)
  • Fine with high winds3 (1%)
  • Other39 (13%)
  • Not recorded6 (2%)

Road surface

  • Dry246 (81%)
  • Wet or damp57 (19%)
  • Snow1 (0.3%)

Type of road

  • One way street or slip road167 (55%)
  • Single carriageway71 (23%)
  • Dual carriageway53 (17%)
  • Not recorded13 (4.3%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B523 crashes

Car occupants make up 34% of the people killed or injured on the B523, followed by pedestrians (21%).

Casualties by road user

  • Car occupant129 (34%)
  • Pedestrian77 (21%)
  • Motorcyclist61 (16%)
  • Bus or coach occupant39 (10%)
  • Taxi or private hire car occupant25 (6.7%)
  • Cyclist22 (5.9%)
  • Van occupant17 (4.5%)
  • Other4 (1.1%)

Vehicles involved

  • Car289 (55%)
  • Motorcycle67 (13%)
  • Bus or coach57 (11%)
  • Taxi or private hire car43 (8.2%)
  • Van or goods vehicle up to 3.5 tonnes35 (6.7%)
  • Pedal cycle22 (4.2%)
  • Goods vehicle over 3.5 tonnes6 (1.1%)
  • Other6 (1.1%)

Casualties by age

  • 0 to 52 (0.5%)
  • 6 to 106 (1.6%)
  • 11 to 156 (1.6%)
  • 16 to 2039 (10%)
  • 21 to 2578 (21%)
  • 26 to 3583 (22%)
  • 36 to 4539 (10%)
  • 46 to 5535 (9.4%)
  • 56 to 6526 (7%)
  • 66 to 7517 (4.5%)
  • Over 7514 (3.7%)
  • Not recorded29 (7.8%)

Drivers, passengers and pedestrians

  • Driver or rider180 (48%)
  • Passenger117 (31%)
  • Pedestrian77 (21%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B523

Map of the 25 most recent crashes on the B523

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

  • 25 crashes
  • Serious
  • Slight

B523 crashes by council area

Of the 304 collisions on the B523, 302 were in Westminster.

Collisions on the B523 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stWestminster302372358

B523 crashes by town

Of the 304 collisions on the B523, 259 were in the built-up area of City of Westminster.

Recent crashes on the B523

These are the 25 most recent collisions on the B523, from 19 September 1993 to 25 September 2025.

Severity