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CrashStats

B830 accidents: crash map and statistics

Police recorded 44 collisions on the B830 from 1980 to 2025, with 47 casualties. Of those crashes, 1 was fatal and 4 serious, and 1 person was killed.

In 2025 there was 1 collision on the B830, down 67% from 3 in 2024, with 3 casualties.

Collisions since 1980
44
4,692nd highest of 4,923 roads
Casualties
47
1.07 per collision
Fatal collisions
1
1 person killed
Serious collisions
4
4 seriously injured
Collisions in 2025
1
Down 67% on 2024
Casualties in 2025
3
Level with 2024

Crash severity on the B830

On the B830, 2.3% of collisions were fatal and 9.1% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1980 to 2025

  • Fatal12.3%
  • Serious49.1%
  • Slight3989%

Where the B830 ranks among 4,923 roads

Most collisions
4,692nd
Most casualties
4,817th
Most fatal collisions
3,933rd
Most serious collisions
4,879th

B830 accidents by year

Collisions on the B830 peaked at 4 in 2006 and were down to 1 in 2025.

Collisions and casualties on the B830, 1980 to 2025

  • Collisions
  • Collisions in 2025
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202513
202433
202311
202200
202100
202000
201933
201811
201722
201612
201500
201400
201311
201200
201100
201011
200900
200811
200722
200644
200544
200433
200300
200211
200122
200011
199922
199811
199722
199600
199511
199433
199300
199200
199100
199000
198900
198800
198700
198600
198500
198400
198311
198200
198100
198022

When crashes happen on the B830

Wednesday has the most collisions on the B830 (13), and 3pm to 6pm is the busiest time of day (13).

Collisions by day of the week

  • Monday7 (16%)
  • Tuesday8 (18%)
  • Wednesday13 (30%)
  • Thursday8 (18%)
  • Friday5 (11%)
  • Saturday1 (2.3%)
  • Sunday2 (4.5%)

Collisions by time of day

  • Midnight to 3am0 (0%)
  • 3am to 6am0 (0%)
  • 6am to 9am6 (14%)
  • 9am to noon7 (16%)
  • Noon to 3pm9 (20%)
  • 3pm to 6pm13 (30%)
  • 6pm to 9pm7 (16%)
  • 9pm to midnight2 (4.5%)

Collisions by month

  • January11 (25%)
  • February2 (4.5%)
  • March5 (11%)
  • April1 (2.3%)
  • May2 (4.5%)
  • June2 (4.5%)
  • July3 (6.8%)
  • August2 (4.5%)
  • September2 (4.5%)
  • October6 (14%)
  • November6 (14%)
  • December2 (4.5%)

Light conditions at the time

  • Daylight32 (73%)
  • Dark, street lights lit12 (27%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B830 crashes

On the B830, 100% of collisions happened where the speed limit was 30 mph and 57% on a dry road surface.

Speed limit at the scene

  • 30 mph44 (100%)

Weather at the time

  • Fine, no high winds33 (75%)
  • Raining, no high winds8 (18%)
  • Fine with high winds1 (2.3%)
  • Raining with high winds1 (2.3%)
  • Not recorded1 (2.3%)

Road surface

  • Dry25 (57%)
  • Wet or damp19 (43%)

Type of road

  • Single carriageway39 (89%)
  • Roundabout4 (9.1%)
  • Not recorded1 (2.3%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B830 crashes

Car occupants make up 40% of the people killed or injured on the B830, followed by pedestrians (38%).

Casualties by road user

  • Car occupant19 (40%)
  • Pedestrian18 (38%)
  • Cyclist5 (11%)
  • Motorcyclist3 (6.4%)
  • Bus or coach occupant1 (2.1%)
  • Van occupant1 (2.1%)

Vehicles involved

  • Car58 (82%)
  • Pedal cycle5 (7%)
  • Motorcycle4 (5.6%)
  • Bus or coach2 (2.8%)
  • Van or goods vehicle up to 3.5 tonnes1 (1.4%)
  • Not recorded1 (1.4%)

Casualties by age

  • 6 to 103 (6.4%)
  • 11 to 1515 (32%)
  • 16 to 202 (4.3%)
  • 21 to 256 (13%)
  • 26 to 356 (13%)
  • 46 to 554 (8.5%)
  • 56 to 654 (8.5%)
  • 66 to 756 (13%)
  • Over 751 (2.1%)

Drivers, passengers and pedestrians

  • Driver or rider21 (45%)
  • Pedestrian18 (38%)
  • Passenger8 (17%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B830

Map of the 25 most recent crashes on the B830

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

  • 25 crashes
  • Serious
  • Slight

B830 crashes by council area

Of the 44 collisions on the B830, 40 were in West Dunbartonshire.

Collisions on the B830 in each area, 1980 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stWest Dunbartonshire404304

B830 crashes by town

Of the 44 collisions on the B830, 39 were in the built-up area of Dumbarton.

Recent crashes on the B830

These are the 25 most recent collisions on the B830, from 27 January 2005 to 15 January 2025.

Severity