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CrashStats

A33 accidents: crash map and statistics

Police recorded 7,746 collisions on the A33 from 1979 to 2025, with 10,536 casualties. Of those crashes, 150 were fatal and 1,433 serious, and 161 people were killed.

In 2025 there were 86 collisions on the A33, down 5% from 91 in 2024, with 112 casualties.

Live A33 closures, incidents and roadworks are checked every 5 minutes.

Collisions since 1979
7,746
113th highest of 4,923 roads
Casualties
10,536
1.36 per collision
Fatal collisions
150
161 people killed
Serious collisions
1,433
1,741 seriously injured
Collisions in 2025
86
Down 5% on 2024
Casualties in 2025
112
Down 7% on 2024

Crash severity on the A33

On the A33, 1.9% of collisions were fatal and 18% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal1501.9%
  • Serious1,43318%
  • Slight6,16380%

Where the A33 ranks among 4,923 roads

Most collisions
113th
Most casualties
119th
Most fatal collisions
137th
Most serious collisions
124th

A33 accidents by year

Collisions on the A33 peaked at 290 in 1989 and were down to 86 in 2025.

Collisions and casualties on the A33, 1979 to 2025

  • Collisions
  • Collisions in 2025: 86
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202586112
202491120
20237391
20228898
20217398
20206778
2019106131
2018100125
2017102138
2016111136
2015125160
2014129172
2013149189
2012126194
2011129162
2010156209
2009128176
2008139170
2007144198
2006156197
2005144177
2004126161
2003153197
2002169231
2001142194
2000156226
1999130177
1998153188
1997186246
1996172235
1995188238
1994224303
1993200272
1992210295
1991236327
1990226307
1989290410
1988203288
1987238315
1986259372
1985264358
1984246338
1983255370
1982226341
1981205310
1980216337
1979251369

When crashes happen on the A33

Friday has the most collisions on the A33 (1,289), and 3pm to 6pm is the busiest time of day (1,834).

Collisions by day of the week

  • Monday1,141 (15%)
  • Tuesday1,118 (14%)
  • Wednesday1,135 (15%)
  • Thursday1,131 (15%)
  • Friday1,289 (17%)
  • Saturday1,046 (14%)
  • Sunday886 (11%)

Collisions by time of day

  • Midnight to 3am291 (3.8%)
  • 3am to 6am136 (1.8%)
  • 6am to 9am999 (13%)
  • 9am to noon1,182 (15%)
  • Noon to 3pm1,436 (19%)
  • 3pm to 6pm1,834 (24%)
  • 6pm to 9pm1,156 (15%)
  • 9pm to midnight712 (9.2%)

Collisions by month

  • January615 (7.9%)
  • February579 (7.5%)
  • March581 (7.5%)
  • April597 (7.7%)
  • May607 (7.8%)
  • June590 (7.6%)
  • July619 (8%)
  • August637 (8.2%)
  • September673 (8.7%)
  • October743 (9.6%)
  • November817 (11%)
  • December688 (8.9%)

Light conditions at the time

  • Daylight5,475 (71%)
  • Dark, street lights lit1,487 (19%)
  • Dark, no street lighting657 (8.5%)
  • Dark, lighting unknown101 (1.3%)
  • Dark, street lights unlit26 (0.3%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A33 crashes

On the A33, 31% of collisions happened where the speed limit was 30 mph and 68% on a dry road surface.

Speed limit at the scene

  • 20 mph8 (0.1%)
  • 30 mph2,424 (31%)
  • 40 mph1,835 (24%)
  • 50 mph1,261 (16%)
  • 60 mph1,173 (15%)
  • 70 mph1,043 (13%)
  • Not recorded2 (under 0.1%)

Weather at the time

  • Fine, no high winds6,092 (79%)
  • Raining, no high winds1,087 (14%)
  • Raining with high winds123 (1.6%)
  • Fine with high winds83 (1.1%)
  • Other312 (4%)
  • Not recorded49 (0.6%)

Road surface

  • Dry5,239 (68%)
  • Wet or damp2,368 (31%)
  • Frost or ice79 (1%)
  • Snow31 (0.4%)
  • Other15 (0.2%)
  • Not recorded14 (0.2%)

Type of road

  • Single carriageway3,397 (44%)
  • Dual carriageway2,906 (38%)
  • Roundabout1,145 (15%)
  • One way street or slip road291 (3.8%)
  • Not recorded7 (0.1%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A33 crashes

Car occupants make up 67% of the people killed or injured on the A33, followed by motorcyclists (12%).

Casualties by road user

  • Car occupant7,010 (67%)
  • Motorcyclist1,234 (12%)
  • Pedestrian773 (7.3%)
  • Cyclist749 (7.1%)
  • Van occupant318 (3%)
  • Goods vehicle occupant (over 3.5 tonnes)177 (1.7%)
  • Other265 (2.5%)
  • Not recorded10 (0.1%)

Vehicles involved

  • Car11,620 (74%)
  • Motorcycle1,233 (7.8%)
  • Goods vehicle over 3.5 tonnes799 (5.1%)
  • Van or goods vehicle up to 3.5 tonnes786 (5%)
  • Pedal cycle769 (4.9%)
  • Bus or coach197 (1.3%)
  • Other295 (1.9%)
  • Not recorded10 (0.1%)

Casualties by age

  • 0 to 5163 (1.5%)
  • 6 to 10233 (2.2%)
  • 11 to 15305 (2.9%)
  • 16 to 201,673 (16%)
  • 21 to 251,708 (16%)
  • 26 to 352,297 (22%)
  • 36 to 451,639 (16%)
  • 46 to 551,115 (11%)
  • 56 to 65723 (6.9%)
  • 66 to 75391 (3.7%)
  • Over 75218 (2.1%)
  • Not recorded71 (0.7%)

Drivers, passengers and pedestrians

  • Driver or rider6,769 (64%)
  • Passenger2,994 (28%)
  • Pedestrian773 (7.3%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A33

Map of the 25 most recent crashes on the A33

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

A33 crashes by council area

Collisions on the A33 were recorded in 9 council areas. Southampton has the most, with 2,730, followed by Reading (1,676) and Winchester (1,290).

Collisions on the A33 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stSouthampton2,7303,41928487
2ndReading1,6762,17618207
3rdWinchester1,2901,96939292
4thBasingstoke and Deane1,1611,60930267
5thEastleigh3285371473
6thWokingham2793981447
7thHart241378651
8thTest Valley252914
9thRushmoor4501

A33 crashes by town

Collisions on the A33 were recorded in 11 towns and built-up areas, led by Southampton (2,731) and Reading (1,218).

Recent crashes on the A33

These are the 25 most recent collisions on the A33, from 7 October to 31 December 2025.

Severity