Skip to main content
CrashStats

B321 accidents: crash map and statistics

Police recorded 117 collisions on the B321 from 1979 to 2025, with 129 casualties. Of those crashes, none were fatal and 23 were serious.

In 2025 there was 1 collision on the B321, down 67% from 3 in 2024, with 1 casualty.

Collisions since 1979
117
3,879th highest of 4,923 roads
Casualties
129
1.10 per collision
Fatal collisions
0
No one killed
Serious collisions
23
23 seriously injured
Collisions in 2025
1
Down 67% on 2024
Casualties in 2025
1
Down 67% on 2024

Crash severity on the B321

None of the 117 collisions on the B321 were fatal, and 20% were serious (18% across Great Britain).

Collisions by severity, 1979 to 2025

  • Fatal00%
  • Serious2320%
  • Slight9480%

Where the B321 ranks among 4,923 roads

Most collisions
3,879th
Most casualties
4,080th
Most fatal collisions
4,444th
Most serious collisions
3,899th

B321 accidents by year

Collisions on the B321 peaked at 7 in 1979 and were down to 1 in 2025.

Collisions and casualties on the B321, 1979 to 2025

  • Collisions
  • Collisions in 2025: 1
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202511
202433
202322
202211
202111
202022
201911
201822
201711
201611
201500
201455
201322
201233
201133
201044
200900
200811
200711
200612
200522
200400
200311
200222
200111
200044
199944
199811
199722
199634
199546
199433
199322
199211
199144
199012
198933
198846
198722
198644
198556
198467
198345
198233
198167
198034
197977

When crashes happen on the B321

Friday has the most collisions on the B321 (26), and 9am to noon is the busiest time of day (23).

Collisions by day of the week

  • Monday20 (17%)
  • Tuesday17 (15%)
  • Wednesday22 (19%)
  • Thursday11 (9.4%)
  • Friday26 (22%)
  • Saturday10 (8.5%)
  • Sunday11 (9.4%)

Collisions by time of day

  • Midnight to 3am5 (4.3%)
  • 3am to 6am1 (0.9%)
  • 6am to 9am19 (16%)
  • 9am to noon23 (20%)
  • Noon to 3pm14 (12%)
  • 3pm to 6pm23 (20%)
  • 6pm to 9pm22 (19%)
  • 9pm to midnight10 (8.5%)

Collisions by month

  • January11 (9.4%)
  • February8 (6.8%)
  • March14 (12%)
  • April10 (8.5%)
  • May17 (15%)
  • June9 (7.7%)
  • July4 (3.4%)
  • August8 (6.8%)
  • September12 (10%)
  • October12 (10%)
  • November6 (5.1%)
  • December6 (5.1%)

Light conditions at the time

  • Daylight86 (74%)
  • Dark, street lights lit29 (25%)
  • Dark, street lights unlit2 (1.7%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B321 crashes

On the B321, 94% of collisions happened where the speed limit was 30 mph and 77% on a dry road surface.

Speed limit at the scene

  • 20 mph7 (6%)
  • 30 mph110 (94%)

Weather at the time

  • Fine, no high winds89 (76%)
  • Raining, no high winds10 (8.5%)
  • Other16 (14%)
  • Not recorded2 (1.7%)

Road surface

  • Dry90 (77%)
  • Wet or damp24 (21%)
  • Frost or ice2 (1.7%)
  • Not recorded1 (0.9%)

Type of road

  • Single carriageway76 (65%)
  • One way street or slip road21 (18%)
  • Roundabout7 (6%)
  • Dual carriageway1 (0.9%)
  • Not recorded12 (10%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B321 crashes

Cyclists make up 31% of the people killed or injured on the B321, followed by car occupants (22%).

Casualties by road user

  • Cyclist40 (31%)
  • Car occupant29 (22%)
  • Motorcyclist29 (22%)
  • Pedestrian29 (22%)
  • Bus or coach occupant1 (0.8%)
  • Van occupant1 (0.8%)

Vehicles involved

  • Car117 (59%)
  • Pedal cycle43 (22%)
  • Motorcycle27 (14%)
  • Van or goods vehicle up to 3.5 tonnes6 (3%)
  • Bus or coach3 (1.5%)
  • Goods vehicle over 3.5 tonnes1 (0.5%)
  • Other vehicle1 (0.5%)
  • Taxi or private hire car1 (0.5%)

Casualties by age

  • 0 to 51 (0.8%)
  • 6 to 102 (1.6%)
  • 11 to 156 (4.7%)
  • 16 to 2023 (18%)
  • 21 to 2514 (11%)
  • 26 to 3524 (19%)
  • 36 to 4515 (12%)
  • 46 to 5519 (15%)
  • 56 to 656 (4.7%)
  • 66 to 757 (5.4%)
  • Over 753 (2.3%)
  • Not recorded9 (7%)

Drivers, passengers and pedestrians

  • Driver or rider89 (69%)
  • Pedestrian29 (22%)
  • Passenger11 (8.5%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B321

Map of the 25 most recent crashes on the B321

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

  • 25 crashes
  • Serious
  • Slight

B321 crashes by council area

Of the 117 collisions on the B321, 115 were in Richmond upon Thames.

Collisions on the B321 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stRichmond upon Thames115127023

B321 crashes by town

Of the 117 collisions on the B321, 78 were in the built-up area of Richmond upon Thames.

Recent crashes on the B321

These are the 25 most recent collisions on the B321, from 7 April 2012 to 14 March 2025.

Severity