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CrashStats

A12 accidents: crash map and statistics

Police recorded 27,581 collisions on the A12 from 1979 to 2025, with 39,814 casualties. Of those crashes, 647 were fatal and 4,929 serious, and 719 people were killed.

In 2025 there were 351 collisions on the A12, up 11% from 317 in 2024, with 478 casualties.

Live A12 closures, incidents and roadworks are checked every 5 minutes.

Collisions since 1979
27,581
21st highest of 4,923 roads
Casualties
39,814
1.44 per collision
Fatal collisions
647
719 people killed
Serious collisions
4,929
6,087 seriously injured
Collisions in 2025
351
Up 11% on 2024
Casualties in 2025
478
Up 9% on 2024

Crash severity on the A12

On the A12, 2.3% of collisions were fatal and 18% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal6472.3%
  • Serious4,92918%
  • Slight22,00580%

Where the A12 ranks among 4,923 roads

Most collisions
21st
Most casualties
17th
Most fatal collisions
14th
Most serious collisions
18th

A12 accidents by year

Collisions on the A12 peaked at 849 in 1985 and were down to 351 in 2025.

Collisions and casualties on the A12, 1979 to 2025

  • Collisions
  • Collisions in 2025: 351
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
2025351478
2024317440
2023263398
2022349527
2021324473
2020341489
2019447684
2018410597
2017408615
2016452657
2015460651
2014477689
2013472642
2012435607
2011470684
2010436618
2009517758
2008526750
2007543762
2006529742
2005611877
2004673973
2003671956
2002672959
20017421,067
2000592898
1999599883
1998535758
1997552818
1996620895
1995581819
1994582848
1993660942
1992622918
1991675989
19907561,067
19897951,143
19887711,106
19877361,111
19868431,196
19858491,221
19848481,245
19838091,094
19828331,226
19818011,116
19808011,196
19798251,232

When crashes happen on the A12

Friday has the most collisions on the A12 (4,475), and 3pm to 6pm is the busiest time of day (6,196).

Collisions by day of the week

  • Monday3,966 (14%)
  • Tuesday3,828 (14%)
  • Wednesday3,859 (14%)
  • Thursday3,982 (14%)
  • Friday4,475 (16%)
  • Saturday3,904 (14%)
  • Sunday3,567 (13%)

Collisions by time of day

  • Midnight to 3am1,300 (4.7%)
  • 3am to 6am736 (2.7%)
  • 6am to 9am3,935 (14%)
  • 9am to noon4,080 (15%)
  • Noon to 3pm4,919 (18%)
  • 3pm to 6pm6,196 (22%)
  • 6pm to 9pm3,871 (14%)
  • 9pm to midnight2,544 (9.2%)

Collisions by month

  • January2,157 (7.8%)
  • February1,960 (7.1%)
  • March2,108 (7.6%)
  • April2,024 (7.3%)
  • May2,310 (8.4%)
  • June2,238 (8.1%)
  • July2,533 (9.2%)
  • August2,569 (9.3%)
  • September2,410 (8.7%)
  • October2,551 (9.2%)
  • November2,481 (9%)
  • December2,240 (8.1%)

Light conditions at the time

  • Daylight19,325 (70%)
  • Dark, street lights lit5,247 (19%)
  • Dark, no street lighting2,712 (9.8%)
  • Dark, lighting unknown190 (0.7%)
  • Dark, street lights unlit106 (0.4%)
  • Not recorded1 (under 0.1%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A12 crashes

On the A12, 37% of collisions happened where the speed limit was 70 mph and 69% on a dry road surface.

Speed limit at the scene

  • 20 mph62 (0.2%)
  • 30 mph6,568 (24%)
  • 40 mph5,572 (20%)
  • 50 mph2,823 (10%)
  • 60 mph2,381 (8.6%)
  • 70 mph10,174 (37%)
  • Not recorded1 (under 0.1%)

Weather at the time

  • Fine, no high winds20,678 (75%)
  • Raining, no high winds3,572 (13%)
  • Fine with high winds398 (1.4%)
  • Fog or mist344 (1.2%)
  • Other2,345 (8.5%)
  • Not recorded244 (0.9%)

Road surface

  • Dry19,160 (69%)
  • Wet or damp7,729 (28%)
  • Frost or ice328 (1.2%)
  • Snow169 (0.6%)
  • Other110 (0.4%)
  • Not recorded85 (0.3%)

Type of road

  • Dual carriageway16,658 (60%)
  • Single carriageway6,222 (23%)
  • Roundabout3,029 (11%)
  • One way street or slip road1,504 (5.5%)
  • Not recorded168 (0.6%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A12 crashes

Car occupants make up 71% of the people killed or injured on the A12, followed by motorcyclists (11%).

Casualties by road user

  • Car occupant28,287 (71%)
  • Motorcyclist4,529 (11%)
  • Pedestrian1,950 (4.9%)
  • Van occupant1,609 (4%)
  • Cyclist1,547 (3.9%)
  • Goods vehicle occupant (over 3.5 tonnes)742 (1.9%)
  • Other1,148 (2.9%)
  • Not recorded2 (under 0.1%)

Vehicles involved

  • Car40,570 (73%)
  • Motorcycle4,582 (8.3%)
  • Van or goods vehicle up to 3.5 tonnes3,556 (6.4%)
  • Goods vehicle over 3.5 tonnes3,478 (6.3%)
  • Pedal cycle1,588 (2.9%)
  • Bus or coach639 (1.2%)
  • Other1,060 (1.9%)
  • Not recorded8 (under 0.1%)

Casualties by age

  • 0 to 5662 (1.7%)
  • 6 to 10900 (2.3%)
  • 11 to 151,344 (3.4%)
  • 16 to 205,742 (14%)
  • 21 to 255,412 (14%)
  • 26 to 358,237 (21%)
  • 36 to 456,088 (15%)
  • 46 to 554,512 (11%)
  • 56 to 652,985 (7.5%)
  • 66 to 751,739 (4.4%)
  • Over 751,006 (2.5%)
  • Not recorded1,187 (3%)

Drivers, passengers and pedestrians

  • Driver or rider25,399 (64%)
  • Passenger12,465 (31%)
  • Pedestrian1,950 (4.9%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A12

Map of the 25 most recent crashes on the A12

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

A12 crashes by council area

Collisions on the A12 were recorded in 17 council areas. East Suffolk has the most, with 6,300, followed by Redbridge (4,620) and Havering (3,357).

Collisions on the A12 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stEast Suffolk6,3009,1351521,291
2ndRedbridge4,6206,09067571
3rdHavering3,3574,82951477
4thBraintree2,1373,37859410
5thColchester1,9903,06675410
6thChelmsford1,9602,87762433
7thGreat Yarmouth1,6932,34945356
8thBrentwood1,5452,32546324
9thBabergh1,3332,12649267
10thTower Hamlets8641,175596
11thBarking and Dagenham467705858
12thWaltham Forest457617561
13thIpswich39450913107
14thHackney253337433
15thTendring94136318
16thNewham517318
17thMaldon253613

A12 crashes by town

Collisions on the A12 were recorded in 25 towns and built-up areas, led by Redbridge (3,439) and Lowestoft (2,331).

Recent crashes on the A12

These are the 25 most recent collisions on the A12, from 1 December to 30 December 2025.

Severity