Skip to main content
CrashStats

A423 accidents: crash map and statistics

Police recorded 4,867 collisions on the A423 from 1979 to 2025, with 7,198 casualties. Of those crashes, 188 were fatal and 1,279 serious, and 213 people were killed.

In 2025 there were 21 collisions on the A423, up 40% from 15 in 2024, with 29 casualties.

Live A423 closures, incidents and roadworks are checked every 5 minutes.

Collisions since 1979
4,867
212th highest of 4,923 roads
Casualties
7,198
1.48 per collision
Fatal collisions
188
213 people killed
Serious collisions
1,279
1,724 seriously injured
Collisions in 2025
21
Up 40% on 2024
Casualties in 2025
29
Up 21% on 2024

Crash severity on the A423

On the A423, 3.9% of collisions were fatal and 26% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal1883.9%
  • Serious1,27926%
  • Slight3,40070%

Where the A423 ranks among 4,923 roads

Most collisions
212th
Most casualties
196th
Most fatal collisions
102nd
Most serious collisions
144th

A423 accidents by year

Collisions on the A423 peaked at 273 in 1985 and were down to 21 in 2025.

Collisions and casualties on the A423, 1979 to 2025

  • Collisions
  • Collisions in 2025: 21
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20252129
20241524
20231826
20221623
20211618
20202026
20192028
20182432
20172028
20162936
20152841
20143351
20131421
20122232
20113447
20103560
20094458
20084861
20074875
20064155
20056082
200481111
2003100130
2002116156
200178117
200091127
199994150
199880114
199781116
199677109
19957499
199477108
199381121
1992109156
1991175263
1990269427
1989260373
1988266437
1987248343
1986248371
1985273420
1984252371
1983226356
1982217333
1981215352
1980247346
1979226339

When crashes happen on the A423

Friday has the most collisions on the A423 (913), and 3pm to 6pm is the busiest time of day (1,127).

Collisions by day of the week

  • Monday657 (13%)
  • Tuesday662 (14%)
  • Wednesday657 (13%)
  • Thursday711 (15%)
  • Friday913 (19%)
  • Saturday684 (14%)
  • Sunday583 (12%)

Collisions by time of day

  • Midnight to 3am185 (3.8%)
  • 3am to 6am107 (2.2%)
  • 6am to 9am753 (15%)
  • 9am to noon709 (15%)
  • Noon to 3pm845 (17%)
  • 3pm to 6pm1,127 (23%)
  • 6pm to 9pm675 (14%)
  • 9pm to midnight466 (9.6%)

Collisions by month

  • January392 (8.1%)
  • February391 (8%)
  • March374 (7.7%)
  • April342 (7%)
  • May369 (7.6%)
  • June416 (8.5%)
  • July432 (8.9%)
  • August433 (8.9%)
  • September415 (8.5%)
  • October448 (9.2%)
  • November453 (9.3%)
  • December402 (8.3%)

Light conditions at the time

  • Daylight3,461 (71%)
  • Dark, no street lighting739 (15%)
  • Dark, street lights lit615 (13%)
  • Dark, lighting unknown24 (0.5%)
  • Dark, street lights unlit18 (0.4%)
  • Not recorded10 (0.2%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A423 crashes

On the A423, 53% of collisions happened where the speed limit was 60 mph and 61% on a dry road surface.

Speed limit at the scene

  • 30 mph776 (16%)
  • 40 mph848 (17%)
  • 50 mph191 (3.9%)
  • 60 mph2,574 (53%)
  • 70 mph471 (9.7%)
  • Not recorded7 (0.1%)

Weather at the time

  • Fine, no high winds3,733 (77%)
  • Raining, no high winds645 (13%)
  • Fine with high winds95 (2%)
  • Raining with high winds81 (1.7%)
  • Other275 (5.7%)
  • Not recorded38 (0.8%)

Road surface

  • Dry2,974 (61%)
  • Wet or damp1,689 (35%)
  • Frost or ice123 (2.5%)
  • Snow53 (1.1%)
  • Other12 (0.2%)
  • Not recorded16 (0.3%)

Type of road

  • Single carriageway3,429 (70%)
  • Dual carriageway707 (15%)
  • Roundabout670 (14%)
  • One way street or slip road59 (1.2%)
  • Not recorded2 (under 0.1%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A423 crashes

Car occupants make up 68% of the people killed or injured on the A423, followed by motorcyclists (12%).

Casualties by road user

  • Car occupant4,876 (68%)
  • Motorcyclist899 (12%)
  • Pedestrian469 (6.5%)
  • Cyclist322 (4.5%)
  • Van occupant300 (4.2%)
  • Goods vehicle occupant (over 3.5 tonnes)141 (2%)
  • Other190 (2.6%)
  • Not recorded1 (under 0.1%)

Vehicles involved

  • Car6,980 (72%)
  • Motorcycle896 (9.3%)
  • Goods vehicle over 3.5 tonnes594 (6.2%)
  • Van or goods vehicle up to 3.5 tonnes581 (6%)
  • Pedal cycle338 (3.5%)
  • Bus or coach92 (1%)
  • Other133 (1.4%)
  • Not recorded26 (0.3%)

Casualties by age

  • 0 to 5118 (1.6%)
  • 6 to 10138 (1.9%)
  • 11 to 15296 (4.1%)
  • 16 to 201,231 (17%)
  • 21 to 251,133 (16%)
  • 26 to 351,412 (20%)
  • 36 to 451,005 (14%)
  • 46 to 55766 (11%)
  • 56 to 65516 (7.2%)
  • 66 to 75266 (3.7%)
  • Over 75171 (2.4%)
  • Not recorded146 (2%)

Drivers, passengers and pedestrians

  • Driver or rider4,649 (65%)
  • Passenger2,080 (29%)
  • Pedestrian469 (6.5%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A423

Map of the 25 most recent crashes on the A423

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

A423 crashes by council area

Collisions on the A423 were recorded in 11 council areas. Cherwell has the most, with 1,212, followed by South Oxfordshire (1,009) and Stratford-on-Avon (664).

Collisions on the A423 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stCherwell1,2121,91235290
2ndSouth Oxfordshire1,0091,45953271
3rdStratford-on-Avon66496038199
4thCoventry60881312203
5thRugby45269720125
6thVale of White Horse427555452
7thWindsor and Maidenhead2203661561
8thWest Oxfordshire109202633
9thWokingham105155230
10thOxford5562113
11thVale of Glamorgan31221

A423 crashes by town

Collisions on the A423 were recorded in 12 towns and built-up areas, led by Coventry (348) and Kidlington (187).

Recent crashes on the A423

These are the 25 most recent collisions on the A423, from 8 November 2024 to 23 December 2025.

Severity