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CrashStats

A4142 accidents: crash map and statistics

Police recorded 1,103 collisions on the A4142 from 1979 to 2025, with 1,492 casualties. Of those crashes, 22 were fatal and 206 serious, and 25 people were killed.

In 2025 there were 4 collisions on the A4142, down 50% from 8 in 2024, with 5 casualties.

Collisions since 1979
1,103
988th highest of 4,923 roads
Casualties
1,492
1.35 per collision
Fatal collisions
22
25 people killed
Serious collisions
206
246 seriously injured
Collisions in 2025
4
Down 50% on 2024
Casualties in 2025
5
Down 50% on 2024

Crash severity on the A4142

On the A4142, 2% of collisions were fatal and 19% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal222%
  • Serious20619%
  • Slight87579%

Where the A4142 ranks among 4,923 roads

Most collisions
988th
Most casualties
996th
Most fatal collisions
902nd
Most serious collisions
1,020th

A4142 accidents by year

Collisions on the A4142 peaked at 45 in 1999 and were down to 4 in 2025.

Collisions and casualties on the A4142, 1979 to 2025

  • Collisions
  • Collisions in 2025: 4
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202545
2024810
20231111
202277
2021610
2020810
2019912
20181415
20172033
20162431
20153041
20142235
20132130
20122031
20112026
20102228
20091829
20082132
20072327
20063347
20053773
20043446
20033955
20023647
20013444
20003036
19994557
19982536
19972938
19962432
19951826
19942536
19931822
19922228
19912440
19902225
19892632
19883553
19873139
19862028
19852531
19843032
19833339
19822130
19813141
19802426
19792430

When crashes happen on the A4142

Friday has the most collisions on the A4142 (185), and 3pm to 6pm is the busiest time of day (273).

Collisions by day of the week

  • Monday164 (15%)
  • Tuesday171 (16%)
  • Wednesday175 (16%)
  • Thursday163 (15%)
  • Friday185 (17%)
  • Saturday146 (13%)
  • Sunday99 (9%)

Collisions by time of day

  • Midnight to 3am47 (4.3%)
  • 3am to 6am32 (2.9%)
  • 6am to 9am155 (14%)
  • 9am to noon148 (13%)
  • Noon to 3pm182 (17%)
  • 3pm to 6pm273 (25%)
  • 6pm to 9pm174 (16%)
  • 9pm to midnight92 (8.3%)

Collisions by month

  • January96 (8.7%)
  • February75 (6.8%)
  • March104 (9.4%)
  • April74 (6.7%)
  • May81 (7.3%)
  • June89 (8.1%)
  • July84 (7.6%)
  • August85 (7.7%)
  • September85 (7.7%)
  • October111 (10%)
  • November131 (12%)
  • December88 (8%)

Light conditions at the time

  • Daylight729 (66%)
  • Dark, street lights lit285 (26%)
  • Dark, no street lighting72 (6.5%)
  • Dark, lighting unknown11 (1%)
  • Dark, street lights unlit5 (0.5%)
  • Not recorded1 (0.1%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A4142 crashes

On the A4142, 36% of collisions happened where the speed limit was 70 mph and 65% on a dry road surface.

Speed limit at the scene

  • 20 mph1 (0.1%)
  • 30 mph273 (25%)
  • 40 mph44 (4%)
  • 50 mph305 (28%)
  • 60 mph78 (7.1%)
  • 70 mph401 (36%)
  • Not recorded1 (0.1%)

Weather at the time

  • Fine, no high winds866 (79%)
  • Raining, no high winds133 (12%)
  • Raining with high winds17 (1.5%)
  • Fine with high winds16 (1.5%)
  • Other61 (5.5%)
  • Not recorded10 (0.9%)

Road surface

  • Dry713 (65%)
  • Wet or damp352 (32%)
  • Frost or ice22 (2%)
  • Snow7 (0.6%)
  • Other3 (0.3%)
  • Not recorded6 (0.5%)

Type of road

  • Dual carriageway769 (70%)
  • Roundabout280 (25%)
  • Single carriageway29 (2.6%)
  • One way street or slip road25 (2.3%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A4142 crashes

Car occupants make up 67% of the people killed or injured on the A4142, followed by motorcyclists (15%).

Casualties by road user

  • Car occupant996 (67%)
  • Motorcyclist218 (15%)
  • Cyclist109 (7.3%)
  • Pedestrian64 (4.3%)
  • Van occupant49 (3.3%)
  • Minibus occupant16 (1.1%)
  • Goods vehicle occupant (over 3.5 tonnes)14 (0.9%)
  • Other26 (1.7%)

Vehicles involved

  • Car1,592 (72%)
  • Motorcycle223 (10%)
  • Van or goods vehicle up to 3.5 tonnes121 (5.5%)
  • Pedal cycle113 (5.1%)
  • Goods vehicle over 3.5 tonnes97 (4.4%)
  • Bus or coach19 (0.9%)
  • Other42 (1.9%)
  • Not recorded6 (0.3%)

Casualties by age

  • 0 to 519 (1.3%)
  • 6 to 1036 (2.4%)
  • 11 to 1550 (3.4%)
  • 16 to 20200 (13%)
  • 21 to 25231 (15%)
  • 26 to 35352 (24%)
  • 36 to 45224 (15%)
  • 46 to 55167 (11%)
  • 56 to 65103 (6.9%)
  • 66 to 7546 (3.1%)
  • Over 7523 (1.5%)
  • Not recorded41 (2.7%)

Drivers, passengers and pedestrians

  • Driver or rider1,067 (72%)
  • Passenger361 (24%)
  • Pedestrian64 (4.3%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A4142

Map of the 25 most recent crashes on the A4142

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

A4142 crashes by council area

Collisions on the A4142 were recorded in 2 council areas. Oxford has the most, with 1,008, followed by South Oxfordshire (92).

Collisions on the A4142 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stOxford1,0081,35517172
2ndSouth Oxfordshire92133534

A4142 crashes by town

Of the 1,103 collisions on the A4142, 570 were in the built-up area of Oxford.

Recent crashes on the A4142

These are the 25 most recent collisions on the A4142, from 12 August 2022 to 26 December 2025.

Severity