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CrashStats

B651 accidents: crash map and statistics

Police recorded 819 collisions on the B651 from 1979 to 2025, with 1,125 casualties. Of those crashes, 14 were fatal and 192 serious, and 16 people were killed.

In 2025 there were 8 collisions on the B651, up 33% from 6 in 2024, with 13 casualties.

Collisions since 1979
819
1,300th highest of 4,923 roads
Casualties
1,125
1.37 per collision
Fatal collisions
14
16 people killed
Serious collisions
192
223 seriously injured
Collisions in 2025
8
Up 33% on 2024
Casualties in 2025
13
Up 86% on 2024

Crash severity on the B651

On the B651, 1.7% of collisions were fatal and 23% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal141.7%
  • Serious19223%
  • Slight61375%

Where the B651 ranks among 4,923 roads

Most collisions
1,300th
Most casualties
1,288th
Most fatal collisions
1,329th
Most serious collisions
1,086th

B651 accidents by year

Collisions on the B651 peaked at 34 in 1984 and were down to 8 in 2025.

Collisions and casualties on the B651, 1979 to 2025

  • Collisions
  • Collisions in 2025: 8
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
2025813
202467
202389
202267
202158
202033
201966
2018912
2017910
20161216
201578
201459
20131114
2012710
20111824
20101122
20091117
200889
20071010
20061416
20052024
20041826
20031928
20022035
20012031
20002132
19991622
19982229
19972022
19962334
19952739
19942442
19931112
19922030
19912942
19902229
19893144
19881720
19873242
19863143
19852632
19843450
19832834
19822535
19813045
19802535
19793438

When crashes happen on the B651

Thursday has the most collisions on the B651 (129), and 3pm to 6pm is the busiest time of day (185).

Collisions by day of the week

  • Monday107 (13%)
  • Tuesday111 (14%)
  • Wednesday126 (15%)
  • Thursday129 (16%)
  • Friday123 (15%)
  • Saturday127 (16%)
  • Sunday96 (12%)

Collisions by time of day

  • Midnight to 3am39 (4.8%)
  • 3am to 6am8 (1%)
  • 6am to 9am115 (14%)
  • 9am to noon117 (14%)
  • Noon to 3pm133 (16%)
  • 3pm to 6pm185 (23%)
  • 6pm to 9pm127 (16%)
  • 9pm to midnight95 (12%)

Collisions by month

  • January63 (7.7%)
  • February46 (5.6%)
  • March64 (7.8%)
  • April67 (8.2%)
  • May66 (8.1%)
  • June71 (8.7%)
  • July69 (8.4%)
  • August60 (7.3%)
  • September78 (9.5%)
  • October64 (7.8%)
  • November89 (11%)
  • December82 (10%)

Light conditions at the time

  • Daylight551 (67%)
  • Dark, street lights lit159 (19%)
  • Dark, no street lighting94 (11%)
  • Dark, lighting unknown10 (1.2%)
  • Dark, street lights unlit5 (0.6%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B651 crashes

On the B651, 63% of collisions happened where the speed limit was 30 mph and 55% on a dry road surface.

Speed limit at the scene

  • 20 mph6 (0.7%)
  • 30 mph517 (63%)
  • 40 mph21 (2.6%)
  • 50 mph2 (0.2%)
  • 60 mph267 (33%)
  • 70 mph6 (0.7%)

Weather at the time

  • Fine, no high winds639 (78%)
  • Raining, no high winds122 (15%)
  • Fog or mist10 (1.2%)
  • Raining with high winds10 (1.2%)
  • Other27 (3.3%)
  • Not recorded11 (1.3%)

Road surface

  • Dry449 (55%)
  • Wet or damp336 (41%)
  • Frost or ice25 (3.1%)
  • Snow4 (0.5%)
  • Flood over 3cm deep3 (0.4%)
  • Not recorded2 (0.2%)

Type of road

  • Single carriageway792 (97%)
  • Roundabout19 (2.3%)
  • Dual carriageway4 (0.5%)
  • One way street or slip road2 (0.2%)
  • Not recorded2 (0.2%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B651 crashes

Car occupants make up 62% of the people killed or injured on the B651, followed by motorcyclists (13%).

Casualties by road user

  • Car occupant696 (62%)
  • Motorcyclist149 (13%)
  • Pedestrian114 (10%)
  • Cyclist108 (9.6%)
  • Van occupant22 (2%)
  • Bus or coach occupant16 (1.4%)
  • Other19 (1.7%)
  • Not recorded1 (0.1%)

Vehicles involved

  • Car1,137 (73%)
  • Motorcycle146 (9.4%)
  • Pedal cycle116 (7.5%)
  • Van or goods vehicle up to 3.5 tonnes47 (3%)
  • Goods vehicle over 3.5 tonnes37 (2.4%)
  • Bus or coach32 (2.1%)
  • Other37 (2.4%)
  • Not recorded1 (0.1%)

Casualties by age

  • 0 to 516 (1.4%)
  • 6 to 1025 (2.2%)
  • 11 to 1566 (5.9%)
  • 16 to 20245 (22%)
  • 21 to 25180 (16%)
  • 26 to 35200 (18%)
  • 36 to 45145 (13%)
  • 46 to 55107 (9.5%)
  • 56 to 6561 (5.4%)
  • 66 to 7535 (3.1%)
  • Over 7543 (3.8%)
  • Not recorded2 (0.2%)

Drivers, passengers and pedestrians

  • Driver or rider753 (67%)
  • Passenger258 (23%)
  • Pedestrian114 (10%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B651

Map of the 25 most recent crashes on the B651

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

B651 crashes by council area

Collisions on the B651 were recorded in 2 council areas. St Albans has the most, with 681, followed by North Hertfordshire (138).

Collisions on the B651 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stSt Albans68195512157
2ndNorth Hertfordshire138170235

B651 crashes by town

Collisions on the B651 were recorded in 2 towns and built-up areas, led by St Albans (260) and Wheathampstead (110).

Recent crashes on the B651

These are the 25 most recent collisions on the B651, from 12 May 2022 to 1 November 2025.

Severity