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CrashStats

B520 accidents: crash map and statistics

Police recorded 103 collisions on the B520 from 1979 to 2024, with 114 casualties. Of those crashes, 1 was fatal and 15 serious, and 1 person was killed.

No collisions were recorded on the B520 in 2025, after 3 in 2024.

Collisions since 1979
103
4,007th highest of 4,923 roads
Casualties
114
1.11 per collision
Fatal collisions
1
1 person killed
Serious collisions
15
15 seriously injured
Collisions in 2025
0
3 in 2024
Casualties in 2025
0
3 in 2024

Crash severity on the B520

On the B520, 1% of collisions were fatal and 15% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2024

  • Fatal11%
  • Serious1515%
  • Slight8784%

Where the B520 ranks among 4,923 roads

Most collisions
4,007th
Most casualties
4,196th
Most fatal collisions
3,933rd
Most serious collisions
4,304th

B520 accidents by year

Collisions on the B520 peaked at 5 in 2021; none were recorded in 2025.

Collisions and casualties on the B520, 1979 to 2025

  • Collisions
  • Collisions in 2025
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202500
202433
202337
202222
202155
202000
201956
201833
201700
201600
201522
201422
201322
201200
201111
201022
200900
200800
200733
200634
200500
200422
200334
200211
200100
200034
199933
199811
199755
199633
199522
199434
199333
199234
199145
199000
198955
198833
198722
198611
198544
198411
198322
198222
198155
198044
197922

When crashes happen on the B520

Saturday has the most collisions on the B520 (19), and noon to 3pm is the busiest time of day (21).

Collisions by day of the week

  • Monday15 (15%)
  • Tuesday14 (14%)
  • Wednesday14 (14%)
  • Thursday16 (16%)
  • Friday16 (16%)
  • Saturday19 (18%)
  • Sunday9 (8.7%)

Collisions by time of day

  • Midnight to 3am4 (3.9%)
  • 3am to 6am1 (1%)
  • 6am to 9am11 (11%)
  • 9am to noon18 (17%)
  • Noon to 3pm21 (20%)
  • 3pm to 6pm20 (19%)
  • 6pm to 9pm17 (17%)
  • 9pm to midnight11 (11%)

Collisions by month

  • January7 (6.8%)
  • February14 (14%)
  • March8 (7.8%)
  • April6 (5.8%)
  • May7 (6.8%)
  • June10 (9.7%)
  • July7 (6.8%)
  • August7 (6.8%)
  • September9 (8.7%)
  • October11 (11%)
  • November10 (9.7%)
  • December7 (6.8%)

Light conditions at the time

  • Daylight69 (67%)
  • Dark, street lights lit33 (32%)
  • Dark, lighting unknown1 (1%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B520 crashes

On the B520, 83% of collisions happened where the speed limit was 30 mph and 76% on a dry road surface.

Speed limit at the scene

  • 20 mph17 (17%)
  • 30 mph86 (83%)

Weather at the time

  • Fine, no high winds74 (72%)
  • Raining, no high winds8 (7.8%)
  • Fine with high winds1 (1%)
  • Raining with high winds1 (1%)
  • Other17 (17%)
  • Not recorded2 (1.9%)

Road surface

  • Dry78 (76%)
  • Wet or damp23 (22%)
  • Frost or ice2 (1.9%)

Type of road

  • Single carriageway92 (89%)
  • Dual carriageway3 (2.9%)
  • Not recorded8 (7.8%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B520 crashes

Car occupants make up 31% of the people killed or injured on the B520, followed by pedestrians (29%).

Casualties by road user

  • Car occupant35 (31%)
  • Pedestrian33 (29%)
  • Motorcyclist28 (25%)
  • Cyclist15 (13%)
  • Mobility scooter rider1 (0.9%)
  • Taxi or private hire car occupant1 (0.9%)
  • Van occupant1 (0.9%)

Vehicles involved

  • Car116 (65%)
  • Motorcycle29 (16%)
  • Pedal cycle15 (8.4%)
  • Van or goods vehicle up to 3.5 tonnes9 (5.1%)
  • Goods vehicle over 3.5 tonnes3 (1.7%)
  • Other vehicle3 (1.7%)
  • Taxi or private hire car2 (1.1%)
  • Mobility scooter1 (0.6%)

Casualties by age

  • 0 to 53 (2.6%)
  • 6 to 107 (6.1%)
  • 11 to 157 (6.1%)
  • 16 to 2010 (8.8%)
  • 21 to 2526 (23%)
  • 26 to 3520 (18%)
  • 36 to 4520 (18%)
  • 46 to 5510 (8.8%)
  • 56 to 653 (2.6%)
  • 66 to 751 (0.9%)
  • Over 752 (1.8%)
  • Not recorded5 (4.4%)

Drivers, passengers and pedestrians

  • Driver or rider63 (55%)
  • Pedestrian33 (29%)
  • Passenger18 (16%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B520

Map of the 25 most recent crashes on the B520

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

  • 25 crashes
  • Serious
  • Slight

B520 crashes by council area

Collisions on the B520 were recorded in 2 council areas. Camden has the most, with 92, followed by Brent (9).

Collisions on the B520 in each area, 1979 to 2024
RankAreaCollisionsCasualtiesFatalSerious
1stCamden92103113
2ndBrent9902

B520 crashes by town

Collisions on the B520 were recorded in 2 towns and built-up areas, led by Camden (84) and Brent (5).

Recent crashes on the B520

These are the 25 most recent collisions on the B520, from 24 April 2014 to 22 June 2024.

Severity