Skip to main content
CrashStats

B4493 accidents: crash map and statistics

Police recorded 362 collisions on the B4493 from 1979 to 2025, with 423 casualties. Of those crashes, 6 were fatal and 75 serious, and 6 people were killed.

In 2025 there were 8 collisions on the B4493, up 100% from 4 in 2024, with 8 casualties.

Collisions since 1979
362
2,435th highest of 4,923 roads
Casualties
423
1.17 per collision
Fatal collisions
6
6 people killed
Serious collisions
75
81 seriously injured
Collisions in 2025
8
Up 100% on 2024
Casualties in 2025
8
Up 60% on 2024

Crash severity on the B4493

On the B4493, 1.7% of collisions were fatal and 21% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal61.7%
  • Serious7521%
  • Slight28178%

Where the B4493 ranks among 4,923 roads

Most collisions
2,435th
Most casualties
2,639th
Most fatal collisions
2,299th
Most serious collisions
2,382nd

B4493 accidents by year

Collisions on the B4493 peaked at 17 in 1985 and were down to 8 in 2025.

Collisions and casualties on the B4493, 1979 to 2025

  • Collisions
  • Collisions in 2025: 8
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202588
202445
202322
20221111
202167
202056
201911
201888
201733
201679
201544
201466
201334
201245
201166
20101010
2009510
2008911
200755
20061520
200544
200456
20031113
20021112
20011113
20001013
199944
19981012
19971011
19961316
199567
199467
19931012
19921417
19911112
199099
19891516
19881415
198744
1986810
19851720
19841520
19831011
1982813
198122
198000
197923

When crashes happen on the B4493

Wednesday has the most collisions on the B4493 (66), and 3pm to 6pm is the busiest time of day (85).

Collisions by day of the week

  • Monday58 (16%)
  • Tuesday58 (16%)
  • Wednesday66 (18%)
  • Thursday47 (13%)
  • Friday66 (18%)
  • Saturday39 (11%)
  • Sunday28 (7.7%)

Collisions by time of day

  • Midnight to 3am7 (1.9%)
  • 3am to 6am11 (3%)
  • 6am to 9am66 (18%)
  • 9am to noon43 (12%)
  • Noon to 3pm48 (13%)
  • 3pm to 6pm85 (23%)
  • 6pm to 9pm65 (18%)
  • 9pm to midnight37 (10%)

Collisions by month

  • January33 (9.1%)
  • February26 (7.2%)
  • March22 (6.1%)
  • April23 (6.4%)
  • May22 (6.1%)
  • June29 (8%)
  • July25 (6.9%)
  • August30 (8.3%)
  • September26 (7.2%)
  • October37 (10%)
  • November44 (12%)
  • December45 (12%)

Light conditions at the time

  • Daylight245 (68%)
  • Dark, street lights lit86 (24%)
  • Dark, no street lighting21 (5.8%)
  • Dark, lighting unknown6 (1.7%)
  • Dark, street lights unlit2 (0.6%)
  • Not recorded2 (0.6%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B4493 crashes

On the B4493, 83% of collisions happened where the speed limit was 30 mph and 64% on a dry road surface.

Speed limit at the scene

  • 20 mph1 (0.3%)
  • 30 mph302 (83%)
  • 40 mph19 (5.2%)
  • 50 mph4 (1.1%)
  • 60 mph36 (9.9%)

Weather at the time

  • Fine, no high winds284 (78%)
  • Raining, no high winds40 (11%)
  • Fine with high winds12 (3.3%)
  • Raining with high winds4 (1.1%)
  • Other18 (5%)
  • Not recorded4 (1.1%)

Road surface

  • Dry233 (64%)
  • Wet or damp116 (32%)
  • Frost or ice8 (2.2%)
  • Snow2 (0.6%)
  • Not recorded3 (0.8%)

Type of road

  • Single carriageway276 (76%)
  • Roundabout83 (23%)
  • Dual carriageway3 (0.8%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B4493 crashes

Car occupants make up 39% of the people killed or injured on the B4493, followed by cyclists (26%).

Casualties by road user

  • Car occupant166 (39%)
  • Cyclist110 (26%)
  • Motorcyclist72 (17%)
  • Pedestrian60 (14%)
  • Van occupant6 (1.4%)
  • Bus or coach occupant3 (0.7%)
  • Other5 (1.2%)
  • Not recorded1 (0.2%)

Vehicles involved

  • Car416 (63%)
  • Pedal cycle111 (17%)
  • Motorcycle75 (11%)
  • Van or goods vehicle up to 3.5 tonnes30 (4.5%)
  • Bus or coach9 (1.4%)
  • Other vehicle7 (1.1%)
  • Other16 (2.4%)
  • Not recorded1 (0.2%)

Casualties by age

  • 0 to 58 (1.9%)
  • 6 to 1015 (3.5%)
  • 11 to 1533 (7.8%)
  • 16 to 2086 (20%)
  • 21 to 2545 (11%)
  • 26 to 3569 (16%)
  • 36 to 4561 (14%)
  • 46 to 5533 (7.8%)
  • 56 to 6535 (8.3%)
  • 66 to 7511 (2.6%)
  • Over 7517 (4%)
  • Not recorded10 (2.4%)

Drivers, passengers and pedestrians

  • Driver or rider313 (74%)
  • Pedestrian60 (14%)
  • Passenger50 (12%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B4493

Map of the 25 most recent crashes on the B4493

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

  • 25 crashes
  • Serious
  • Slight

B4493 crashes by council area

Collisions on the B4493 were recorded in 2 council areas. South Oxfordshire has the most, with 267, followed by Vale of White Horse (94).

Collisions on the B4493 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stSouth Oxfordshire267299349
2ndVale of White Horse94123326

B4493 crashes by town

Of the 362 collisions on the B4493, 259 were in the built-up area of Didcot.

Recent crashes on the B4493

These are the 25 most recent collisions on the B4493, from 14 January 2022 to 9 November 2025.

Severity