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CrashStats

B4491 accidents: crash map and statistics

Police recorded 547 collisions on the B4491 from 1979 to 2025, with 650 casualties. Of those crashes, 6 were fatal and 98 serious, and 8 people were killed.

In 2025 there were 3 collisions on the B4491, down 57% from 7 in 2024, with 3 casualties.

Collisions since 1979
547
1,828th highest of 4,923 roads
Casualties
650
1.19 per collision
Fatal collisions
6
8 people killed
Serious collisions
98
104 seriously injured
Collisions in 2025
3
Down 57% on 2024
Casualties in 2025
3
Down 57% on 2024

Crash severity on the B4491

On the B4491, 1.1% of collisions were fatal and 18% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal61.1%
  • Serious9818%
  • Slight44381%

Where the B4491 ranks among 4,923 roads

Most collisions
1,828th
Most casualties
2,021st
Most fatal collisions
2,299th
Most serious collisions
1,948th

B4491 accidents by year

Collisions on the B4491 peaked at 26 in 1987 and were down to 3 in 2025.

Collisions and casualties on the B4491, 1979 to 2025

  • Collisions
  • Collisions in 2025: 3
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202533
202477
202399
202266
2021711
202044
201911
201888
2017911
201655
20151012
20141011
201377
2012911
20111316
2010810
20091415
200879
20071719
2006910
200589
2004910
200379
2002910
20011418
20001012
19991617
19981213
19971112
19961213
19951214
19941112
199399
1992911
1991811
19902328
19892224
19881518
19872637
19861217
19851515
19841519
19832031
19822022
19812227
19801923
19791824

When crashes happen on the B4491

Thursday has the most collisions on the B4491 (88), and 6pm to 9pm is the busiest time of day (111).

Collisions by day of the week

  • Monday87 (16%)
  • Tuesday83 (15%)
  • Wednesday79 (14%)
  • Thursday88 (16%)
  • Friday77 (14%)
  • Saturday69 (13%)
  • Sunday64 (12%)

Collisions by time of day

  • Midnight to 3am27 (4.9%)
  • 3am to 6am13 (2.4%)
  • 6am to 9am80 (15%)
  • 9am to noon64 (12%)
  • Noon to 3pm90 (16%)
  • 3pm to 6pm102 (19%)
  • 6pm to 9pm111 (20%)
  • 9pm to midnight60 (11%)

Collisions by month

  • January45 (8.2%)
  • February30 (5.5%)
  • March43 (7.9%)
  • April45 (8.2%)
  • May49 (9%)
  • June44 (8%)
  • July62 (11%)
  • August43 (7.9%)
  • September50 (9.1%)
  • October40 (7.3%)
  • November66 (12%)
  • December30 (5.5%)

Light conditions at the time

  • Daylight373 (68%)
  • Dark, street lights lit169 (31%)
  • Dark, lighting unknown3 (0.5%)
  • Dark, street lights unlit2 (0.4%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B4491 crashes

On the B4491, 94% of collisions happened where the speed limit was 30 mph and 78% on a dry road surface.

Speed limit at the scene

  • 20 mph30 (5.5%)
  • 30 mph514 (94%)
  • 40 mph1 (0.2%)
  • 50 mph1 (0.2%)
  • 70 mph1 (0.2%)

Weather at the time

  • Fine, no high winds415 (76%)
  • Raining, no high winds64 (12%)
  • Fine with high winds5 (0.9%)
  • Raining with high winds2 (0.4%)
  • Other55 (10%)
  • Not recorded6 (1.1%)

Road surface

  • Dry426 (78%)
  • Wet or damp113 (21%)
  • Frost or ice4 (0.7%)
  • Snow2 (0.4%)
  • Not recorded2 (0.4%)

Type of road

  • Single carriageway484 (88%)
  • Dual carriageway15 (2.7%)
  • One way street or slip road2 (0.4%)
  • Roundabout1 (0.2%)
  • Not recorded45 (8.2%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B4491 crashes

Car occupants make up 47% of the people killed or injured on the B4491, followed by motorcyclists (21%).

Casualties by road user

  • Car occupant306 (47%)
  • Motorcyclist135 (21%)
  • Pedestrian111 (17%)
  • Cyclist62 (9.5%)
  • Bus or coach occupant21 (3.2%)
  • Van occupant11 (1.7%)
  • Other3 (0.5%)
  • Not recorded1 (0.2%)

Vehicles involved

  • Car666 (68%)
  • Motorcycle142 (14%)
  • Pedal cycle64 (6.5%)
  • Van or goods vehicle up to 3.5 tonnes53 (5.4%)
  • Bus or coach31 (3.1%)
  • Goods vehicle over 3.5 tonnes11 (1.1%)
  • Taxi or private hire car8 (0.8%)
  • Other10 (1%)

Casualties by age

  • 0 to 511 (1.7%)
  • 6 to 1017 (2.6%)
  • 11 to 1528 (4.3%)
  • 16 to 2081 (12%)
  • 21 to 2599 (15%)
  • 26 to 35144 (22%)
  • 36 to 4593 (14%)
  • 46 to 5567 (10%)
  • 56 to 6537 (5.7%)
  • 66 to 7522 (3.4%)
  • Over 7524 (3.7%)
  • Not recorded27 (4.2%)

Drivers, passengers and pedestrians

  • Driver or rider417 (64%)
  • Passenger122 (19%)
  • Pedestrian111 (17%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B4491

Map of the 25 most recent crashes on the B4491

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

  • 25 crashes
  • Serious
  • Slight

B4491 crashes by council area

Collisions on the B4491 were recorded in 2 council areas. Ealing has the most, with 543, followed by Hounslow (4).

Collisions on the B4491 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stEaling543646698
2ndHounslow4400

B4491 crashes by town

Of the 547 collisions on the B4491, 440 were in the built-up area of Ealing.

Recent crashes on the B4491

These are the 25 most recent collisions on the B4491, from 8 March 2022 to 16 November 2025.

Severity