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CrashStats

B509 accidents: crash map and statistics

Police recorded 1,108 collisions on the B509 from 1979 to 2025, with 1,276 casualties. Of those crashes, 14 were fatal and 187 serious, and 14 people were killed.

In 2025 there were 10 collisions on the B509, level with 2024, with 10 casualties.

Collisions since 1979
1,108
984th highest of 4,923 roads
Casualties
1,276
1.15 per collision
Fatal collisions
14
14 people killed
Serious collisions
187
195 seriously injured
Collisions in 2025
10
Level with 2024
Casualties in 2025
10
Down 9% on 2024

Crash severity on the B509

On the B509, 1.3% of collisions were fatal and 17% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal141.3%
  • Serious18717%
  • Slight90782%

Where the B509 ranks among 4,923 roads

Most collisions
984th
Most casualties
1,166th
Most fatal collisions
1,329th
Most serious collisions
1,125th

B509 accidents by year

Collisions on the B509 peaked at 45 in 1979 and were down to 10 in 2025.

Collisions and casualties on the B509, 1979 to 2025

  • Collisions
  • Collisions in 2025: 10
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20251010
20241011
20231111
20221616
20211515
20201415
20191920
20182124
20171518
20161213
20151922
20141518
201388
2012810
20111313
20101214
20091720
20081724
20071617
200688
20051819
20041923
20032632
20022328
20012732
20002829
19992735
19982831
19973033
19963243
19952125
19943033
19932932
19922730
19912829
19903438
19893237
19883845
19873133
19863442
19854449
19843535
19833947
19823544
19812835
19804452
19794558

When crashes happen on the B509

Friday has the most collisions on the B509 (174), and 3pm to 6pm is the busiest time of day (246).

Collisions by day of the week

  • Monday155 (14%)
  • Tuesday167 (15%)
  • Wednesday160 (14%)
  • Thursday166 (15%)
  • Friday174 (16%)
  • Saturday156 (14%)
  • Sunday130 (12%)

Collisions by time of day

  • Midnight to 3am81 (7.3%)
  • 3am to 6am33 (3%)
  • 6am to 9am99 (8.9%)
  • 9am to noon160 (14%)
  • Noon to 3pm159 (14%)
  • 3pm to 6pm246 (22%)
  • 6pm to 9pm194 (18%)
  • 9pm to midnight136 (12%)

Collisions by month

  • January86 (7.8%)
  • February75 (6.8%)
  • March120 (11%)
  • April92 (8.3%)
  • May99 (8.9%)
  • June109 (9.8%)
  • July91 (8.2%)
  • August92 (8.3%)
  • September76 (6.9%)
  • October93 (8.4%)
  • November99 (8.9%)
  • December76 (6.9%)

Light conditions at the time

  • Daylight700 (63%)
  • Dark, street lights lit392 (35%)
  • Dark, lighting unknown9 (0.8%)
  • Dark, street lights unlit7 (0.6%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B509 crashes

On the B509, 91% of collisions happened where the speed limit was 30 mph and 76% on a dry road surface.

Speed limit at the scene

  • 20 mph104 (9.4%)
  • 30 mph1,004 (91%)

Weather at the time

  • Fine, no high winds816 (74%)
  • Raining, no high winds143 (13%)
  • Snowing, no high winds7 (0.6%)
  • Fine with high winds5 (0.5%)
  • Other109 (9.8%)
  • Not recorded28 (2.5%)

Road surface

  • Dry843 (76%)
  • Wet or damp243 (22%)
  • Frost or ice12 (1.1%)
  • Snow5 (0.5%)
  • Not recorded5 (0.5%)

Type of road

  • Single carriageway904 (82%)
  • Dual carriageway59 (5.3%)
  • Roundabout44 (4%)
  • One way street or slip road27 (2.4%)
  • Not recorded74 (6.7%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B509 crashes

Car occupants make up 33% of the people killed or injured on the B509, followed by pedestrians (23%).

Casualties by road user

  • Car occupant421 (33%)
  • Pedestrian298 (23%)
  • Motorcyclist253 (20%)
  • Cyclist158 (12%)
  • Bus or coach occupant76 (6%)
  • Van occupant36 (2.8%)
  • Other32 (2.5%)
  • Not recorded2 (0.2%)

Vehicles involved

  • Car1,150 (60%)
  • Motorcycle271 (14%)
  • Pedal cycle165 (8.6%)
  • Van or goods vehicle up to 3.5 tonnes128 (6.7%)
  • Bus or coach98 (5.1%)
  • Taxi or private hire car62 (3.2%)
  • Other46 (2.4%)
  • Not recorded1 (0.1%)

Casualties by age

  • 0 to 522 (1.7%)
  • 6 to 1025 (2%)
  • 11 to 1553 (4.2%)
  • 16 to 20122 (9.6%)
  • 21 to 25199 (16%)
  • 26 to 35333 (26%)
  • 36 to 45184 (14%)
  • 46 to 55111 (8.7%)
  • 56 to 6562 (4.9%)
  • 66 to 7548 (3.8%)
  • Over 7540 (3.1%)
  • Not recorded77 (6%)

Drivers, passengers and pedestrians

  • Driver or rider730 (57%)
  • Pedestrian298 (23%)
  • Passenger248 (19%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B509

Map of the 25 most recent crashes on the B509

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

  • 25 crashes
  • Serious
  • Slight

B509 crashes by council area

Of the 1,108 collisions on the B509, 1,107 were in Camden.

Collisions on the B509 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stCamden1,1071,27514186

B509 crashes by town

Of the 1,108 collisions on the B509, 981 were in the built-up area of Camden.

Recent crashes on the B509

These are the 25 most recent collisions on the B509, from 25 June 2023 to 19 November 2025.

Severity