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CrashStats

A4209 accidents: crash map and statistics

Police recorded 799 collisions on the A4209 from 1979 to 2025, with 893 casualties. Of those crashes, 7 were fatal and 132 serious, and 7 people were killed.

In 2025 there were 6 collisions on the A4209, up 50% from 4 in 2024, with 6 casualties.

Collisions since 1979
799
1,336th highest of 4,923 roads
Casualties
893
1.12 per collision
Fatal collisions
7
7 people killed
Serious collisions
132
139 seriously injured
Collisions in 2025
6
Up 50% on 2024
Casualties in 2025
6
Up 50% on 2024

Crash severity on the A4209

On the A4209, 0.9% of collisions were fatal and 17% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal70.9%
  • Serious13217%
  • Slight66083%

Where the A4209 ranks among 4,923 roads

Most collisions
1,336th
Most casualties
1,568th
Most fatal collisions
2,103rd
Most serious collisions
1,531st

A4209 accidents by year

Collisions on the A4209 peaked at 34 in 1986 and were down to 6 in 2025.

Collisions and casualties on the A4209, 1979 to 2025

  • Collisions
  • Collisions in 2025: 6
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202566
202444
202333
20221415
202155
202044
201988
2018810
20171112
20161111
20151316
20141111
201377
20121212
20111111
20101214
20091317
20081314
20071320
20061118
20051617
20041011
20031717
20021516
20012635
20002021
19992224
19981921
19972629
19962226
19952323
19941213
19932325
19921316
19911415
19902732
19892021
19882728
19872732
19863438
19852224
19842829
19833234
19823436
19812832
19802429
19792831

When crashes happen on the A4209

Thursday has the most collisions on the A4209 (140), and 3pm to 6pm is the busiest time of day (177).

Collisions by day of the week

  • Monday123 (15%)
  • Tuesday117 (15%)
  • Wednesday127 (16%)
  • Thursday140 (18%)
  • Friday121 (15%)
  • Saturday98 (12%)
  • Sunday73 (9.1%)

Collisions by time of day

  • Midnight to 3am39 (4.9%)
  • 3am to 6am19 (2.4%)
  • 6am to 9am69 (8.6%)
  • 9am to noon117 (15%)
  • Noon to 3pm133 (17%)
  • 3pm to 6pm177 (22%)
  • 6pm to 9pm162 (20%)
  • 9pm to midnight83 (10%)

Collisions by month

  • January57 (7.1%)
  • February38 (4.8%)
  • March62 (7.8%)
  • April52 (6.5%)
  • May65 (8.1%)
  • June72 (9%)
  • July75 (9.4%)
  • August73 (9.1%)
  • September83 (10%)
  • October85 (11%)
  • November79 (9.9%)
  • December58 (7.3%)

Light conditions at the time

  • Daylight543 (68%)
  • Dark, street lights lit248 (31%)
  • Dark, lighting unknown5 (0.6%)
  • Dark, street lights unlit3 (0.4%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A4209 crashes

On the A4209, 96% of collisions happened where the speed limit was 30 mph and 77% on a dry road surface.

Speed limit at the scene

  • 20 mph29 (3.6%)
  • 30 mph766 (96%)
  • 40 mph1 (0.1%)
  • 60 mph2 (0.3%)
  • 70 mph1 (0.1%)

Weather at the time

  • Fine, no high winds603 (75%)
  • Raining, no high winds107 (13%)
  • Fine with high winds7 (0.9%)
  • Raining with high winds3 (0.4%)
  • Other71 (8.9%)
  • Not recorded8 (1%)

Road surface

  • Dry613 (77%)
  • Wet or damp180 (23%)
  • Frost or ice1 (0.1%)
  • Snow1 (0.1%)
  • Not recorded4 (0.5%)

Type of road

  • Single carriageway544 (68%)
  • One way street or slip road131 (16%)
  • Dual carriageway85 (11%)
  • Roundabout5 (0.6%)
  • Not recorded34 (4.3%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A4209 crashes

Pedestrians make up 26% of the people killed or injured on the A4209, followed by motorcyclists (24%).

Casualties by road user

  • Pedestrian236 (26%)
  • Motorcyclist216 (24%)
  • Car occupant196 (22%)
  • Cyclist109 (12%)
  • Bus or coach occupant62 (6.9%)
  • Taxi or private hire car occupant59 (6.6%)
  • Other14 (1.6%)
  • Not recorded1 (0.1%)

Vehicles involved

  • Car658 (50%)
  • Motorcycle229 (17%)
  • Taxi or private hire car133 (10%)
  • Pedal cycle115 (8.8%)
  • Bus or coach82 (6.3%)
  • Van or goods vehicle up to 3.5 tonnes69 (5.3%)
  • Goods vehicle over 3.5 tonnes16 (1.2%)
  • Other10 (0.8%)

Casualties by age

  • 0 to 57 (0.8%)
  • 6 to 1018 (2%)
  • 11 to 1518 (2%)
  • 16 to 2075 (8.4%)
  • 21 to 25132 (15%)
  • 26 to 35228 (26%)
  • 36 to 45144 (16%)
  • 46 to 55102 (11%)
  • 56 to 6545 (5%)
  • 66 to 7534 (3.8%)
  • Over 7523 (2.6%)
  • Not recorded67 (7.5%)

Drivers, passengers and pedestrians

  • Driver or rider479 (54%)
  • Pedestrian236 (26%)
  • Passenger178 (20%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A4209

Map of the 25 most recent crashes on the A4209

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

  • 25 crashes
  • Serious
  • Slight

A4209 crashes by council area

Of the 799 collisions on the A4209, 796 were in Westminster.

Collisions on the A4209 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stWestminster7968877132

A4209 crashes by town

Of the 799 collisions on the A4209, 713 were in the built-up area of City of Westminster.

Recent crashes on the A4209

These are the 25 most recent collisions on the A4209, from 26 April 2022 to 4 November 2025.

Severity