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CrashStats

B3366 accidents: crash map and statistics

Police recorded 185 collisions on the B3366 from 1979 to 2025, with 234 casualties. Of those crashes, 2 were fatal and 38 serious, and 2 people were killed.

In 2025 there were 2 collisions on the B3366, up 100% from 1 in 2024, with 2 casualties.

Collisions since 1979
185
3,332nd highest of 4,923 roads
Casualties
234
1.26 per collision
Fatal collisions
2
2 people killed
Serious collisions
38
40 seriously injured
Collisions in 2025
2
Up 100% on 2024
Casualties in 2025
2
Up 100% on 2024

Crash severity on the B3366

On the B3366, 1.1% of collisions were fatal and 21% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal21.1%
  • Serious3821%
  • Slight14578%

Where the B3366 ranks among 4,923 roads

Most collisions
3,332nd
Most casualties
3,431st
Most fatal collisions
3,485th
Most serious collisions
3,345th

B3366 accidents by year

Collisions on the B3366 peaked at 12 in 1980 and were down to 2 in 2025.

Collisions and casualties on the B3366, 1979 to 2025

  • Collisions
  • Collisions in 2025: 2
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202522
202411
202322
202222
202100
202011
201900
201811
201711
201644
201511
201433
201344
201213
201146
201033
200936
200846
200711
2006713
200569
200422
200357
200200
200133
2000810
1999811
199866
199711
199645
199589
199447
199344
199211
199179
199068
198999
198822
198736
198644
198578
198458
198378
198269
198178
19801212
197958

When crashes happen on the B3366

Thursday has the most collisions on the B3366 (36), and 3pm to 6pm is the busiest time of day (45).

Collisions by day of the week

  • Monday30 (16%)
  • Tuesday24 (13%)
  • Wednesday27 (15%)
  • Thursday36 (19%)
  • Friday28 (15%)
  • Saturday20 (11%)
  • Sunday20 (11%)

Collisions by time of day

  • Midnight to 3am5 (2.7%)
  • 3am to 6am1 (0.5%)
  • 6am to 9am34 (18%)
  • 9am to noon24 (13%)
  • Noon to 3pm26 (14%)
  • 3pm to 6pm45 (24%)
  • 6pm to 9pm35 (19%)
  • 9pm to midnight15 (8.1%)

Collisions by month

  • January10 (5.4%)
  • February17 (9.2%)
  • March16 (8.6%)
  • April8 (4.3%)
  • May12 (6.5%)
  • June13 (7%)
  • July16 (8.6%)
  • August13 (7%)
  • September18 (9.7%)
  • October18 (9.7%)
  • November22 (12%)
  • December22 (12%)

Light conditions at the time

  • Daylight128 (69%)
  • Dark, street lights lit53 (29%)
  • Dark, lighting unknown2 (1.1%)
  • Dark, street lights unlit2 (1.1%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B3366 crashes

On the B3366, 96% of collisions happened where the speed limit was 30 mph and 71% on a dry road surface.

Speed limit at the scene

  • 30 mph177 (96%)
  • 40 mph8 (4.3%)

Weather at the time

  • Fine, no high winds128 (69%)
  • Raining, no high winds25 (14%)
  • Raining with high winds2 (1.1%)
  • Fine with high winds1 (0.5%)
  • Other25 (14%)
  • Not recorded4 (2.2%)

Road surface

  • Dry132 (71%)
  • Wet or damp46 (25%)
  • Frost or ice5 (2.7%)
  • Snow1 (0.5%)
  • Not recorded1 (0.5%)

Type of road

  • Single carriageway155 (84%)
  • Roundabout8 (4.3%)
  • Dual carriageway3 (1.6%)
  • Not recorded19 (10%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B3366 crashes

Car occupants make up 57% of the people killed or injured on the B3366, followed by motorcyclists (21%).

Casualties by road user

  • Car occupant134 (57%)
  • Motorcyclist48 (21%)
  • Pedestrian23 (9.8%)
  • Cyclist22 (9.4%)
  • Van occupant3 (1.3%)
  • Bus or coach occupant1 (0.4%)
  • Goods vehicle occupant (over 3.5 tonnes)1 (0.4%)
  • Other2 (0.9%)

Vehicles involved

  • Car245 (71%)
  • Motorcycle51 (15%)
  • Pedal cycle23 (6.7%)
  • Van or goods vehicle up to 3.5 tonnes14 (4.1%)
  • Goods vehicle over 3.5 tonnes5 (1.5%)
  • Bus or coach2 (0.6%)
  • Other vehicle2 (0.6%)
  • Mobility scooter1 (0.3%)

Casualties by age

  • 0 to 53 (1.3%)
  • 6 to 105 (2.1%)
  • 11 to 1519 (8.1%)
  • 16 to 2072 (31%)
  • 21 to 2519 (8.1%)
  • 26 to 3527 (12%)
  • 36 to 4531 (13%)
  • 46 to 5519 (8.1%)
  • 56 to 6516 (6.8%)
  • 66 to 7511 (4.7%)
  • Over 755 (2.1%)
  • Not recorded7 (3%)

Drivers, passengers and pedestrians

  • Driver or rider174 (74%)
  • Passenger37 (16%)
  • Pedestrian23 (9.8%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B3366

Map of the 25 most recent crashes on the B3366

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

  • 25 crashes
  • Serious
  • Slight

B3366 crashes by council area

Of the 185 collisions on the B3366, 183 were in Spelthorne.

Collisions on the B3366 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stSpelthorne183230238

B3366 crashes by town

Of the 185 collisions on the B3366, 157 were in the built-up area of Shepperton.

Recent crashes on the B3366

These are the 25 most recent collisions on the B3366, from 24 August 2011 to 17 December 2025.

Severity