Skip to main content
CrashStats

B3109 accidents: crash map and statistics

Police recorded 583 collisions on the B3109 from 1979 to 2025, with 899 casualties. Of those crashes, 16 were fatal and 132 serious, and 20 people were killed.

In 2025 there were 11 collisions on the B3109, up 38% from 8 in 2024, with 26 casualties.

Collisions since 1979
583
1,729th highest of 4,923 roads
Casualties
899
1.54 per collision
Fatal collisions
16
20 people killed
Serious collisions
132
170 seriously injured
Collisions in 2025
11
Up 38% on 2024
Casualties in 2025
26
Up 86% on 2024

Crash severity on the B3109

On the B3109, 2.7% of collisions were fatal and 23% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal162.7%
  • Serious13223%
  • Slight43575%

Where the B3109 ranks among 4,923 roads

Most collisions
1,729th
Most casualties
1,559th
Most fatal collisions
1,181st
Most serious collisions
1,531st

B3109 accidents by year

Collisions on the B3109 peaked at 22 in 2004 and were down to 11 in 2025.

Collisions and casualties on the B3109, 1979 to 2025

  • Collisions
  • Collisions in 2025
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20251126
2024814
20231015
20221015
20211112
20201116
201969
20181014
2017811
20161316
20151317
201457
201389
20121015
20111622
2010714
200969
2008811
20071013
20061522
20051017
20042229
20031533
2002812
20011216
20001626
19991419
19981425
19971828
19962028
19951840
19941722
19931315
19921320
19911618
1990911
19891218
19882047
19871625
19861633
19851827
19841822
19831521
1982917
19811322
1980914
197967

When crashes happen on the B3109

Friday has the most collisions on the B3109 (103), and 3pm to 6pm is the busiest time of day (148).

Collisions by day of the week

  • Monday77 (13%)
  • Tuesday83 (14%)
  • Wednesday85 (15%)
  • Thursday86 (15%)
  • Friday103 (18%)
  • Saturday74 (13%)
  • Sunday75 (13%)

Collisions by time of day

  • Midnight to 3am21 (3.6%)
  • 3am to 6am11 (1.9%)
  • 6am to 9am85 (15%)
  • 9am to noon77 (13%)
  • Noon to 3pm88 (15%)
  • 3pm to 6pm148 (25%)
  • 6pm to 9pm91 (16%)
  • 9pm to midnight62 (11%)

Collisions by month

  • January58 (9.9%)
  • February42 (7.2%)
  • March44 (7.5%)
  • April39 (6.7%)
  • May57 (9.8%)
  • June50 (8.6%)
  • July47 (8.1%)
  • August49 (8.4%)
  • September46 (7.9%)
  • October50 (8.6%)
  • November45 (7.7%)
  • December56 (9.6%)

Light conditions at the time

  • Daylight408 (70%)
  • Dark, no street lighting130 (22%)
  • Dark, street lights lit32 (5.5%)
  • Dark, lighting unknown9 (1.5%)
  • Dark, street lights unlit4 (0.7%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B3109 crashes

On the B3109, 67% of collisions happened where the speed limit was 60 mph and 58% on a dry road surface.

Speed limit at the scene

  • 30 mph124 (21%)
  • 40 mph26 (4.5%)
  • 50 mph35 (6%)
  • 60 mph390 (67%)
  • 70 mph8 (1.4%)

Weather at the time

  • Fine, no high winds442 (76%)
  • Raining, no high winds92 (16%)
  • Fine with high winds14 (2.4%)
  • Raining with high winds10 (1.7%)
  • Other22 (3.8%)
  • Not recorded3 (0.5%)

Road surface

  • Dry340 (58%)
  • Wet or damp214 (37%)
  • Frost or ice20 (3.4%)
  • Snow5 (0.9%)
  • Flood over 3cm deep4 (0.7%)

Type of road

  • Single carriageway549 (94%)
  • Roundabout28 (4.8%)
  • Dual carriageway4 (0.7%)
  • One way street or slip road2 (0.3%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B3109 crashes

Car occupants make up 74% of the people killed or injured on the B3109, followed by motorcyclists (10%).

Casualties by road user

  • Car occupant666 (74%)
  • Motorcyclist91 (10%)
  • Cyclist51 (5.7%)
  • Van occupant39 (4.3%)
  • Pedestrian32 (3.6%)
  • Minibus occupant6 (0.7%)
  • Other vehicle occupant6 (0.7%)
  • Other8 (0.9%)

Vehicles involved

  • Car812 (76%)
  • Motorcycle88 (8.3%)
  • Van or goods vehicle up to 3.5 tonnes65 (6.1%)
  • Pedal cycle52 (4.9%)
  • Goods vehicle over 3.5 tonnes21 (2%)
  • Other vehicle12 (1.1%)
  • Bus or coach7 (0.7%)
  • Other9 (0.8%)

Casualties by age

  • 0 to 514 (1.6%)
  • 6 to 1016 (1.8%)
  • 11 to 1542 (4.7%)
  • 16 to 20173 (19%)
  • 21 to 25138 (15%)
  • 26 to 35181 (20%)
  • 36 to 45116 (13%)
  • 46 to 5593 (10%)
  • 56 to 6566 (7.3%)
  • 66 to 7535 (3.9%)
  • Over 7525 (2.8%)

Drivers, passengers and pedestrians

  • Driver or rider621 (69%)
  • Passenger246 (27%)
  • Pedestrian32 (3.6%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B3109

Map of the 25 most recent crashes on the B3109

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

  • 25 crashes
  • Serious
  • Slight

B3109 crashes by council area

Collisions on the B3109 were recorded in 2 council areas. Wiltshire has the most, with 544, followed by Somerset (38).

Collisions on the B3109 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stWiltshire54483316122
2ndSomerset386409

B3109 crashes by town

Collisions on the B3109 were recorded in 3 towns and built-up areas, led by Bradford-on-Avon (97) and Rudloe (20).

Recent crashes on the B3109

These are the 25 most recent collisions on the B3109, from 13 July 2023 to 13 December 2025.

Severity