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CrashStats

B5378 accidents: crash map and statistics

Police recorded 1,108 collisions on the B5378 from 1979 to 2025, with 1,518 casualties. Of those crashes, 20 were fatal and 195 serious, and 21 people were killed.

In 2025 there were 8 collisions on the B5378, down 20% from 10 in 2024, with 9 casualties.

Collisions since 1979
1,108
984th highest of 4,923 roads
Casualties
1,518
1.37 per collision
Fatal collisions
20
21 people killed
Serious collisions
195
238 seriously injured
Collisions in 2025
8
Down 20% on 2024
Casualties in 2025
9
Down 31% on 2024

Crash severity on the B5378

On the B5378, 1.8% of collisions were fatal and 18% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal201.8%
  • Serious19518%
  • Slight89381%

Where the B5378 ranks among 4,923 roads

Most collisions
984th
Most casualties
980th
Most fatal collisions
983rd
Most serious collisions
1,072nd

B5378 accidents by year

Collisions on the B5378 peaked at 45 in 1997 and were down to 8 in 2025.

Collisions and casualties on the B5378, 1979 to 2025

  • Collisions
  • Collisions in 2025: 8
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202589
20241013
20231720
20221113
2021910
20201824
20191319
20181417
2017914
20162240
20152236
20141625
20132635
20122025
20112131
20101519
20092732
20082232
20071928
20062335
20052533
20042741
20033139
20023645
20012642
20003346
19992738
19983046
19974553
19963951
19953152
19943440
19932433
19921325
19912127
19901622
19893135
19882531
19872135
19863037
19852428
19842733
19832140
19823037
19813547
19803341
19793144

When crashes happen on the B5378

Friday has the most collisions on the B5378 (196), and 3pm to 6pm is the busiest time of day (263).

Collisions by day of the week

  • Monday150 (14%)
  • Tuesday174 (16%)
  • Wednesday165 (15%)
  • Thursday168 (15%)
  • Friday196 (18%)
  • Saturday150 (14%)
  • Sunday105 (9.5%)

Collisions by time of day

  • Midnight to 3am33 (3%)
  • 3am to 6am12 (1.1%)
  • 6am to 9am166 (15%)
  • 9am to noon167 (15%)
  • Noon to 3pm192 (17%)
  • 3pm to 6pm263 (24%)
  • 6pm to 9pm180 (16%)
  • 9pm to midnight95 (8.6%)

Collisions by month

  • January98 (8.8%)
  • February76 (6.9%)
  • March100 (9%)
  • April81 (7.3%)
  • May76 (6.9%)
  • June88 (7.9%)
  • July81 (7.3%)
  • August82 (7.4%)
  • September98 (8.8%)
  • October127 (11%)
  • November108 (9.7%)
  • December93 (8.4%)

Light conditions at the time

  • Daylight790 (71%)
  • Dark, street lights lit256 (23%)
  • Dark, no street lighting45 (4.1%)
  • Dark, lighting unknown9 (0.8%)
  • Dark, street lights unlit8 (0.7%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B5378 crashes

On the B5378, 69% of collisions happened where the speed limit was 30 mph and 58% on a dry road surface.

Speed limit at the scene

  • 20 mph3 (0.3%)
  • 30 mph760 (69%)
  • 40 mph136 (12%)
  • 50 mph2 (0.2%)
  • 60 mph199 (18%)
  • 70 mph8 (0.7%)

Weather at the time

  • Fine, no high winds811 (73%)
  • Raining, no high winds188 (17%)
  • Raining with high winds11 (1%)
  • Fine with high winds9 (0.8%)
  • Other83 (7.5%)
  • Not recorded6 (0.5%)

Road surface

  • Dry638 (58%)
  • Wet or damp434 (39%)
  • Frost or ice25 (2.3%)
  • Flood over 3cm deep5 (0.5%)
  • Other3 (0.3%)
  • Not recorded3 (0.3%)

Type of road

  • Single carriageway931 (84%)
  • Roundabout95 (8.6%)
  • Dual carriageway42 (3.8%)
  • One way street or slip road4 (0.4%)
  • Not recorded36 (3.2%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B5378 crashes

Car occupants make up 66% of the people killed or injured on the B5378, followed by pedestrians (13%).

Casualties by road user

  • Car occupant998 (66%)
  • Pedestrian194 (13%)
  • Motorcyclist140 (9.2%)
  • Cyclist80 (5.3%)
  • Van occupant42 (2.8%)
  • Bus or coach occupant25 (1.6%)
  • Other38 (2.5%)
  • Not recorded1 (0.1%)

Vehicles involved

  • Car1,550 (78%)
  • Motorcycle143 (7.2%)
  • Van or goods vehicle up to 3.5 tonnes102 (5.1%)
  • Pedal cycle85 (4.3%)
  • Bus or coach43 (2.2%)
  • Goods vehicle over 3.5 tonnes27 (1.4%)
  • Taxi or private hire car15 (0.8%)
  • Other30 (1.5%)

Casualties by age

  • 0 to 524 (1.6%)
  • 6 to 1043 (2.8%)
  • 11 to 1583 (5.5%)
  • 16 to 20256 (17%)
  • 21 to 25210 (14%)
  • 26 to 35312 (21%)
  • 36 to 45209 (14%)
  • 46 to 55150 (9.9%)
  • 56 to 6593 (6.1%)
  • 66 to 7570 (4.6%)
  • Over 7543 (2.8%)
  • Not recorded25 (1.6%)

Drivers, passengers and pedestrians

  • Driver or rider955 (63%)
  • Passenger369 (24%)
  • Pedestrian194 (13%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B5378

Map of the 25 most recent crashes on the B5378

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

  • 25 crashes
  • Serious
  • Slight

B5378 crashes by council area

Collisions on the B5378 were recorded in 5 council areas. Hertsmere has the most, with 786, followed by St Albans (310) and Wigan (5).

Collisions on the B5378 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stHertsmere7861,05817131
2ndSt Albans310444364
3rdWigan5800
4thBarnet3400
5thWelwyn Hatfield3300

B5378 crashes by town

Collisions on the B5378 were recorded in 5 towns and built-up areas, led by Borehamwood (416) and Shenley (99).

Recent crashes on the B5378

These are the 25 most recent collisions on the B5378, from 13 July 2023 to 25 October 2025.

Severity