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CrashStats

B815 accidents: crash map and statistics

Collisions since 1979
51
4,596th highest of 4,923 roads
Casualties
71
1.39 per collision
Fatal collisions
1
1 person killed
Serious collisions
17
22 seriously injured
Collisions in 2025
0
1 in 2024
Casualties in 2025
0
1 in 2024

Crash severity on the B815

On the B815, 2% of collisions were fatal and 33% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2024

  • Fatal12%
  • Serious1733%
  • Slight3365%

Where the B815 ranks among 4,923 roads

Most collisions
4,596th
Most casualties
4,568th
Most fatal collisions
3,933rd
Most serious collisions
4,187th

B815 accidents by year

Collisions on the B815 peaked at 6 in 1992; none were recorded in 2025.

Collisions and casualties on the B815, 1979 to 2025

  • Collisions
  • Collisions in 2025
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202500
202411
202300
202200
202100
202000
201911
201811
201711
201600
201522
201400
201300
201200
201122
201000
200933
200800
200722
200611
200511
200400
200324
200224
200112
200011
199900
199811
199711
199600
199513
199400
199334
1992612
199133
199033
198924
198800
198711
198600
198511
198411
198311
198200
198122
198036
197912

When crashes happen on the B815

Wednesday has the most collisions on the B815 (10), and noon to 3pm is the busiest time of day (9).

Collisions by day of the week

  • Monday4 (7.8%)
  • Tuesday6 (12%)
  • Wednesday10 (20%)
  • Thursday8 (16%)
  • Friday10 (20%)
  • Saturday5 (9.8%)
  • Sunday8 (16%)

Collisions by time of day

  • Midnight to 3am5 (9.8%)
  • 3am to 6am1 (2%)
  • 6am to 9am8 (16%)
  • 9am to noon6 (12%)
  • Noon to 3pm9 (18%)
  • 3pm to 6pm9 (18%)
  • 6pm to 9pm5 (9.8%)
  • 9pm to midnight8 (16%)

Collisions by month

  • January3 (5.9%)
  • February6 (12%)
  • March5 (9.8%)
  • April4 (7.8%)
  • May5 (9.8%)
  • June2 (3.9%)
  • July8 (16%)
  • August4 (7.8%)
  • September5 (9.8%)
  • October6 (12%)
  • December3 (5.9%)

Light conditions at the time

  • Daylight30 (59%)
  • Dark, no street lighting14 (27%)
  • Dark, street lights lit7 (14%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B815 crashes

On the B815, 55% of collisions happened where the speed limit was 60 mph and 47% on a dry road surface.

Speed limit at the scene

  • 30 mph17 (33%)
  • 40 mph5 (9.8%)
  • 60 mph28 (55%)
  • 70 mph1 (2%)

Weather at the time

  • Fine, no high winds31 (61%)
  • Raining, no high winds9 (18%)
  • Fine with high winds4 (7.8%)
  • Raining with high winds2 (3.9%)
  • Other4 (7.8%)
  • Not recorded1 (2%)

Road surface

  • Dry24 (47%)
  • Wet or damp24 (47%)
  • Frost or ice2 (3.9%)
  • Snow1 (2%)

Type of road

  • Single carriageway43 (84%)
  • Roundabout6 (12%)
  • Dual carriageway2 (3.9%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B815 crashes

Car occupants make up 68% of the people killed or injured on the B815, followed by cyclists (9.9%).

Casualties by road user

  • Car occupant48 (68%)
  • Cyclist7 (9.9%)
  • Motorcyclist7 (9.9%)
  • Pedestrian4 (5.6%)
  • Bus or coach occupant3 (4.2%)
  • Goods vehicle occupant (over 3.5 tonnes)2 (2.8%)

Vehicles involved

  • Car58 (73%)
  • Pedal cycle8 (10%)
  • Motorcycle7 (8.9%)
  • Goods vehicle over 3.5 tonnes2 (2.5%)
  • Agricultural vehicle1 (1.3%)
  • Bus or coach1 (1.3%)
  • Minibus1 (1.3%)
  • Taxi or private hire car1 (1.3%)

Casualties by age

  • 6 to 105 (7%)
  • 11 to 1512 (17%)
  • 16 to 2014 (20%)
  • 21 to 2510 (14%)
  • 26 to 357 (9.9%)
  • 36 to 458 (11%)
  • 46 to 559 (13%)
  • 56 to 653 (4.2%)
  • 66 to 753 (4.2%)

Drivers, passengers and pedestrians

  • Driver or rider40 (56%)
  • Passenger27 (38%)
  • Pedestrian4 (5.6%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B815

Map of the 25 most recent crashes on the B815

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

  • 25 crashes
  • Serious
  • Slight

B815 crashes by council area

Of the 51 collisions on the B815, 50 were in Renfrewshire.

Collisions on the B815 in each area, 1979 to 2024
RankAreaCollisionsCasualtiesFatalSerious
1stRenfrewshire5069116

B815 crashes by town

Collisions on the B815 were recorded in 2 towns and built-up areas, led by Bishopton (13) and Erskine (4).

Recent crashes on the B815

These are the 25 most recent collisions on the B815, from 22 October 1993 to 17 February 2024.

Severity