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CrashStats

B3143 accidents: crash map and statistics

Police recorded 293 collisions on the B3143 from 1979 to 2025, with 420 casualties. Of those crashes, 2 were fatal and 82 serious, and 2 people were killed.

In 2025 there were 6 collisions on the B3143, up 500% from 1 in 2024, with 6 casualties.

Collisions since 1979
293
2,726th highest of 4,923 roads
Casualties
420
1.43 per collision
Fatal collisions
2
2 people killed
Serious collisions
82
97 seriously injured
Collisions in 2025
6
Up 500% on 2024
Casualties in 2025
6
Up 500% on 2024

Crash severity on the B3143

On the B3143, 0.7% of collisions were fatal and 28% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal20.7%
  • Serious8228%
  • Slight20971%

Where the B3143 ranks among 4,923 roads

Most collisions
2,726th
Most casualties
2,645th
Most fatal collisions
3,485th
Most serious collisions
2,236th

B3143 accidents by year

Collisions on the B3143 peaked at 16 in 1998 and were down to 6 in 2025.

Collisions and casualties on the B3143, 1979 to 2025

  • Collisions
  • Collisions in 2025: 6
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202566
202411
202369
202258
202111
202033
201956
201848
201769
201612
201558
201467
201333
201238
201144
201047
200900
200857
200778
200655
200547
2004914
200357
2002711
200189
2000912
199968
19981627
199766
1996810
1995811
19941116
1993812
1992812
199149
199057
198977
198878
1987713
19861016
1985812
19841220
19831010
19821322
198145
198034
19791015

When crashes happen on the B3143

Wednesday has the most collisions on the B3143 (63), and 3pm to 6pm is the busiest time of day (78).

Collisions by day of the week

  • Monday32 (11%)
  • Tuesday43 (15%)
  • Wednesday63 (22%)
  • Thursday34 (12%)
  • Friday45 (15%)
  • Saturday42 (14%)
  • Sunday34 (12%)

Collisions by time of day

  • Midnight to 3am10 (3.4%)
  • 3am to 6am1 (0.3%)
  • 6am to 9am40 (14%)
  • 9am to noon46 (16%)
  • Noon to 3pm54 (18%)
  • 3pm to 6pm78 (27%)
  • 6pm to 9pm43 (15%)
  • 9pm to midnight21 (7.2%)

Collisions by month

  • January26 (8.9%)
  • February19 (6.5%)
  • March18 (6.1%)
  • April23 (7.8%)
  • May27 (9.2%)
  • June34 (12%)
  • July27 (9.2%)
  • August26 (8.9%)
  • September29 (9.9%)
  • October19 (6.5%)
  • November20 (6.8%)
  • December25 (8.5%)

Light conditions at the time

  • Daylight232 (79%)
  • Dark, no street lighting37 (13%)
  • Dark, street lights unlit16 (5.5%)
  • Dark, street lights lit7 (2.4%)
  • Dark, lighting unknown1 (0.3%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B3143 crashes

On the B3143, 62% of collisions happened where the speed limit was 60 mph and 64% on a dry road surface.

Speed limit at the scene

  • 30 mph105 (36%)
  • 40 mph6 (2%)
  • 60 mph182 (62%)

Weather at the time

  • Fine, no high winds244 (83%)
  • Raining, no high winds33 (11%)
  • Fog or mist3 (1%)
  • Raining with high winds3 (1%)
  • Other9 (3.1%)
  • Not recorded1 (0.3%)

Road surface

  • Dry188 (64%)
  • Wet or damp95 (32%)
  • Frost or ice7 (2.4%)
  • Flood over 3cm deep3 (1%)

Type of road

  • Single carriageway291 (99%)
  • Dual carriageway1 (0.3%)
  • Roundabout1 (0.3%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B3143 crashes

Car occupants make up 67% of the people killed or injured on the B3143, followed by motorcyclists (15%).

Casualties by road user

  • Car occupant283 (67%)
  • Motorcyclist63 (15%)
  • Van occupant21 (5%)
  • Pedestrian17 (4%)
  • Cyclist15 (3.6%)
  • Goods vehicle occupant (over 3.5 tonnes)8 (1.9%)
  • Other vehicle occupant6 (1.4%)
  • Other7 (1.7%)

Vehicles involved

  • Car350 (66%)
  • Motorcycle63 (12%)
  • Van or goods vehicle up to 3.5 tonnes46 (8.7%)
  • Goods vehicle over 3.5 tonnes24 (4.5%)
  • Pedal cycle15 (2.8%)
  • Other vehicle13 (2.5%)
  • Bus or coach8 (1.5%)
  • Other9 (1.7%)

Casualties by age

  • 0 to 510 (2.4%)
  • 6 to 1011 (2.6%)
  • 11 to 159 (2.1%)
  • 16 to 2089 (21%)
  • 21 to 2559 (14%)
  • 26 to 3579 (19%)
  • 36 to 4550 (12%)
  • 46 to 5540 (9.5%)
  • 56 to 6530 (7.1%)
  • 66 to 7524 (5.7%)
  • Over 7519 (4.5%)

Drivers, passengers and pedestrians

  • Driver or rider306 (73%)
  • Passenger97 (23%)
  • Pedestrian17 (4%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B3143

Map of the 25 most recent crashes on the B3143

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

  • 25 crashes
  • Serious
  • Slight

B3143 crashes by council area

Collisions on the B3143 were recorded in 2 council areas. Dorset has the most, with 289, followed by Plymouth (4).

Collisions on the B3143 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stDorset289416281
2ndPlymouth4401

B3143 crashes by town

Collisions on the B3143 were recorded in 2 towns and built-up areas, led by Dorchester, Dorset (42) and Plymouth (3).

Recent crashes on the B3143

These are the 25 most recent collisions on the B3143, from 22 May 2019 to 5 December 2025.

Severity