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CrashStats

B4445 accidents: crash map and statistics

Police recorded 386 collisions on the B4445 from 1979 to 2025, with 515 casualties. Of those crashes, 7 were fatal and 75 serious, and 8 people were killed.

In 2025 there were 2 collisions on the B4445, down 50% from 4 in 2024, with 2 casualties.

Collisions since 1979
386
2,353rd highest of 4,923 roads
Casualties
515
1.33 per collision
Fatal collisions
7
8 people killed
Serious collisions
75
92 seriously injured
Collisions in 2025
2
Down 50% on 2024
Casualties in 2025
2
Down 60% on 2024

Crash severity on the B4445

On the B4445, 1.8% of collisions were fatal and 19% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal71.8%
  • Serious7519%
  • Slight30479%

Where the B4445 ranks among 4,923 roads

Most collisions
2,353rd
Most casualties
2,370th
Most fatal collisions
2,103rd
Most serious collisions
2,382nd

B4445 accidents by year

Collisions on the B4445 peaked at 18 in 1986 and were down to 2 in 2025.

Collisions and casualties on the B4445, 1979 to 2025

  • Collisions
  • Collisions in 2025: 2
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202522
202445
202322
202234
202133
202055
201937
201844
201744
201644
2015812
201436
201356
2012710
201168
201079
2009810
200822
200778
20061014
200511
200467
2003710
20021015
2001912
20001213
19991218
19981522
19971214
19961215
19951023
199468
19931417
19921112
1991813
19901012
19891417
19881518
198777
19861826
1985915
19841013
19831317
19821722
19811520
1980814
197989

When crashes happen on the B4445

Thursday has the most collisions on the B4445 (68), and 3pm to 6pm is the busiest time of day (74).

Collisions by day of the week

  • Monday52 (13%)
  • Tuesday57 (15%)
  • Wednesday48 (12%)
  • Thursday68 (18%)
  • Friday61 (16%)
  • Saturday59 (15%)
  • Sunday41 (11%)

Collisions by time of day

  • Midnight to 3am15 (3.9%)
  • 3am to 6am4 (1%)
  • 6am to 9am60 (16%)
  • 9am to noon59 (15%)
  • Noon to 3pm67 (17%)
  • 3pm to 6pm74 (19%)
  • 6pm to 9pm64 (17%)
  • 9pm to midnight43 (11%)

Collisions by month

  • January38 (9.8%)
  • February28 (7.3%)
  • March33 (8.5%)
  • April38 (9.8%)
  • May30 (7.8%)
  • June26 (6.7%)
  • July34 (8.8%)
  • August26 (6.7%)
  • September29 (7.5%)
  • October31 (8%)
  • November38 (9.8%)
  • December35 (9.1%)

Light conditions at the time

  • Daylight270 (70%)
  • Dark, no street lighting66 (17%)
  • Dark, street lights lit45 (12%)
  • Dark, lighting unknown4 (1%)
  • Not recorded1 (0.3%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B4445 crashes

On the B4445, 55% of collisions happened where the speed limit was 30 mph and 60% on a dry road surface.

Speed limit at the scene

  • 20 mph1 (0.3%)
  • 30 mph212 (55%)
  • 40 mph4 (1%)
  • 60 mph169 (44%)

Weather at the time

  • Fine, no high winds312 (81%)
  • Raining, no high winds45 (12%)
  • Raining with high winds5 (1.3%)
  • Fine with high winds3 (0.8%)
  • Other18 (4.7%)
  • Not recorded3 (0.8%)

Road surface

  • Dry233 (60%)
  • Wet or damp132 (34%)
  • Frost or ice11 (2.8%)
  • Snow5 (1.3%)
  • Flood over 3cm deep4 (1%)
  • Not recorded1 (0.3%)

Type of road

  • Single carriageway354 (92%)
  • Roundabout25 (6.5%)
  • Dual carriageway6 (1.6%)
  • One way street or slip road1 (0.3%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B4445 crashes

Car occupants make up 64% of the people killed or injured on the B4445, followed by pedestrians (12%).

Casualties by road user

  • Car occupant329 (64%)
  • Pedestrian61 (12%)
  • Motorcyclist55 (11%)
  • Cyclist54 (10%)
  • Van occupant8 (1.6%)
  • Minibus occupant4 (0.8%)
  • Other3 (0.6%)
  • Not recorded1 (0.2%)

Vehicles involved

  • Car514 (75%)
  • Pedal cycle60 (8.7%)
  • Motorcycle56 (8.1%)
  • Van or goods vehicle up to 3.5 tonnes30 (4.4%)
  • Other vehicle10 (1.5%)
  • Goods vehicle over 3.5 tonnes6 (0.9%)
  • Other12 (1.7%)
  • Not recorded1 (0.1%)

Casualties by age

  • 0 to 57 (1.4%)
  • 6 to 1012 (2.3%)
  • 11 to 1529 (5.6%)
  • 16 to 20145 (28%)
  • 21 to 2572 (14%)
  • 26 to 3586 (17%)
  • 36 to 4560 (12%)
  • 46 to 5536 (7%)
  • 56 to 6522 (4.3%)
  • 66 to 7521 (4.1%)
  • Over 7517 (3.3%)
  • Not recorded8 (1.6%)

Drivers, passengers and pedestrians

  • Driver or rider347 (67%)
  • Passenger107 (21%)
  • Pedestrian61 (12%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B4445

Map of the 25 most recent crashes on the B4445

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

B4445 crashes by council area

Of the 386 collisions on the B4445, 384 were in South Oxfordshire.

Collisions on the B4445 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stSouth Oxfordshire384510775

B4445 crashes by town

Collisions on the B4445 were recorded in 2 towns and built-up areas, led by Thame (197) and Chinnor (17).

Recent crashes on the B4445

These are the 25 most recent collisions on the B4445, from 4 September 2018 to 26 July 2025.

Severity