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CrashStats

A3102 accidents: crash map and statistics

Police recorded 3,025 collisions on the A3102 from 1979 to 2025, with 4,219 casualties. Of those crashes, 52 were fatal and 557 serious, and 54 people were killed.

In 2025 there were 42 collisions on the A3102, down 5% from 44 in 2024, with 60 casualties.

Collisions since 1979
3,025
383rd highest of 4,923 roads
Casualties
4,219
1.39 per collision
Fatal collisions
52
54 people killed
Serious collisions
557
654 seriously injured
Collisions in 2025
42
Down 5% on 2024
Casualties in 2025
60
Down 12% on 2024

Crash severity on the A3102

On the A3102, 1.7% of collisions were fatal and 18% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal521.7%
  • Serious55718%
  • Slight2,41680%

Where the A3102 ranks among 4,923 roads

Most collisions
383rd
Most casualties
363rd
Most fatal collisions
398th
Most serious collisions
366th

A3102 accidents by year

Collisions on the A3102 peaked at 106 in 1990 and were down to 42 in 2025.

Collisions and casualties on the A3102, 1979 to 2025

  • Collisions
  • Collisions in 2025: 42
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20254260
20244468
20234256
20224755
20214356
20203034
20194662
20185574
20174355
20166884
20155478
20145272
20135269
20123643
20114467
20104459
20094260
20083753
20073848
20065980
200570111
200485121
20036398
200287128
2001101148
200083117
199982128
199899140
1997100145
199695134
199581121
199482118
199380108
199280105
19917392
1990106157
198985119
198885124
198784113
1986106139
198590121
198483113
19833855
19824666
19814662
19802944
19794859

When crashes happen on the A3102

Friday has the most collisions on the A3102 (483), and 3pm to 6pm is the busiest time of day (706).

Collisions by day of the week

  • Monday442 (15%)
  • Tuesday467 (15%)
  • Wednesday468 (15%)
  • Thursday454 (15%)
  • Friday483 (16%)
  • Saturday392 (13%)
  • Sunday319 (11%)

Collisions by time of day

  • Midnight to 3am85 (2.8%)
  • 3am to 6am54 (1.8%)
  • 6am to 9am462 (15%)
  • 9am to noon423 (14%)
  • Noon to 3pm562 (19%)
  • 3pm to 6pm706 (23%)
  • 6pm to 9pm464 (15%)
  • 9pm to midnight269 (8.9%)

Collisions by month

  • January276 (9.1%)
  • February239 (7.9%)
  • March218 (7.2%)
  • April242 (8%)
  • May268 (8.9%)
  • June240 (7.9%)
  • July250 (8.3%)
  • August213 (7%)
  • September258 (8.5%)
  • October258 (8.5%)
  • November294 (9.7%)
  • December269 (8.9%)

Light conditions at the time

  • Daylight2,152 (71%)
  • Dark, street lights lit461 (15%)
  • Dark, no street lighting376 (12%)
  • Dark, street lights unlit23 (0.8%)
  • Dark, lighting unknown13 (0.4%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A3102 crashes

On the A3102, 39% of collisions happened where the speed limit was 60 mph and 62% on a dry road surface.

Speed limit at the scene

  • 20 mph2 (0.1%)
  • 30 mph1,060 (35%)
  • 40 mph341 (11%)
  • 50 mph200 (6.6%)
  • 60 mph1,182 (39%)
  • 70 mph240 (7.9%)

Weather at the time

  • Fine, no high winds2,371 (78%)
  • Raining, no high winds411 (14%)
  • Raining with high winds70 (2.3%)
  • Fine with high winds54 (1.8%)
  • Other73 (2.4%)
  • Not recorded46 (1.5%)

Road surface

  • Dry1,876 (62%)
  • Wet or damp1,061 (35%)
  • Frost or ice70 (2.3%)
  • Snow9 (0.3%)
  • Flood over 3cm deep7 (0.2%)
  • Mud2 (0.1%)

Type of road

  • Single carriageway2,168 (72%)
  • Roundabout426 (14%)
  • Dual carriageway403 (13%)
  • One way street or slip road28 (0.9%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A3102 crashes

Car occupants make up 63% of the people killed or injured on the A3102, followed by motorcyclists (15%).

Casualties by road user

  • Car occupant2,679 (63%)
  • Motorcyclist630 (15%)
  • Pedestrian308 (7.3%)
  • Cyclist292 (6.9%)
  • Van occupant152 (3.6%)
  • Bus or coach occupant62 (1.5%)
  • Goods vehicle occupant (over 3.5 tonnes)61 (1.4%)
  • Other35 (0.8%)

Vehicles involved

  • Car4,231 (71%)
  • Motorcycle623 (10%)
  • Van or goods vehicle up to 3.5 tonnes387 (6.5%)
  • Pedal cycle297 (5%)
  • Goods vehicle over 3.5 tonnes259 (4.3%)
  • Bus or coach69 (1.2%)
  • Other102 (1.7%)
  • Not recorded1 (under 0.1%)

Casualties by age

  • 0 to 567 (1.6%)
  • 6 to 10134 (3.2%)
  • 11 to 15194 (4.6%)
  • 16 to 20806 (19%)
  • 21 to 25612 (15%)
  • 26 to 35846 (20%)
  • 36 to 45586 (14%)
  • 46 to 55432 (10%)
  • 56 to 65288 (6.8%)
  • 66 to 75151 (3.6%)
  • Over 7597 (2.3%)
  • Not recorded6 (0.1%)

Drivers, passengers and pedestrians

  • Driver or rider2,836 (67%)
  • Passenger1,075 (25%)
  • Pedestrian308 (7.3%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A3102

Map of the 25 most recent crashes on the A3102

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

A3102 crashes by council area

Collisions on the A3102 were recorded in 2 council areas. Wiltshire has the most, with 2,277, followed by Swindon (748).

Collisions on the A3102 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stWiltshire2,2773,24047463
2ndSwindon748979594

A3102 crashes by town

Collisions on the A3102 were recorded in 5 towns and built-up areas, led by Swindon, Swindon (603) and Royal Wootton Bassett (379).

Recent crashes on the A3102

These are the 25 most recent collisions on the A3102, from 24 June to 31 December 2025.

Severity