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CrashStats

Harpenden road accidents: crash map and statistics

Police recorded 1,770 road traffic collisions in Harpenden, St Albans, from 1979 to 2025, and 2,200 people were killed or injured in them. Of those collisions, 14 were fatal and 342 were serious.

In 2025 police recorded 14 collisions, the same number as in 2024.

Collisions since 1979
1,770
494th highest of 2,851 towns
Casualties
2,200
1.24 per collision
Fatal collisions
14
15 people killed
Serious collisions
342
376 seriously injured
Collisions in 2025
14
14 in 2024
Casualties in 2025
14
19 in 2024

Road collision statistics for Harpenden

Collisions by severity, 1979 to 2025

  • Fatal140.8%
  • Serious34219%
  • Slight1,41480%

What the data shows

  • Harpenden had 152 collisions from 2016 to 2025, 43% fewer than the 268 from 2006 to 2015.
  • 20% of collisions in Harpenden were fatal or serious, against 20% across Great Britain.
  • 293 children under 16 were killed or injured in Harpenden, 13% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 38% of collisions in Harpenden.

Where Harpenden ranks among 2,851 towns

Most collisions
494th
Most casualties
500th
Most fatal collisions
669th
Most serious collisions
454th

Collisions by day of the week

  • Monday251 (14%)
  • Tuesday264 (15%)
  • Wednesday268 (15%)
  • Thursday281 (16%)
  • Friday328 (19%)
  • Saturday229 (13%)
  • Sunday149 (8.4%)

Light conditions

  • Daylight1,315 (74%)
  • Dark, street lights lit398 (22%)
  • Dark, no street lighting26 (1.5%)
  • Dark, lighting unknown20 (1.1%)
  • Dark, street lights unlit11 (0.6%)

Type of road

  • Single carriageway1,646 (93%)
  • Roundabout75 (4.2%)
  • One way street or slip road37 (2.1%)
  • Dual carriageway5 (0.3%)
  • Not recorded7 (0.4%)

Speed limit at the scene

  • 20 mph9 (0.5%)
  • 30 mph1,585 (90%)
  • 40 mph104 (5.9%)
  • 60 mph72 (4.1%)

Weather at the time

  • Fine, no high winds1,411 (80%)
  • Raining, no high winds257 (15%)
  • Raining with high winds17 (1%)
  • Fine with high winds15 (0.8%)
  • Fog or mist15 (0.8%)
  • Snowing, no high winds9 (0.5%)
  • Snowing with high winds1 (0.1%)
  • Other26 (1.5%)
  • Not recorded19 (1.1%)

Who was hurt

  • Car occupant1,103 (50%)
  • Pedestrian397 (18%)
  • Cyclist316 (14%)
  • Motorcyclist277 (13%)
  • Van occupant35 (1.6%)
  • Bus or coach occupant30 (1.4%)
  • Taxi or private hire car occupant18 (0.8%)
  • Goods vehicle occupant (over 3.5 tonnes)9 (0.4%)
  • Other vehicle occupant8 (0.4%)
  • Minibus occupant5 (0.2%)
  • Other2 (0.1%)

Source: Department for Transport, STATS19 road safety data

Harpenden road accidents by year

Collisions and casualties in Harpenden, 1979 to 2025

Collisions in Harpenden peaked at 77 in 1982; 2025 had 14.

  • Collisions
  • Collisions in 2025: 14
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20251414
20241419
20231314
20222037
20211213
202066
20192229
20181011
20171618
20162533
20152225
20141924
20132428
20123234
20112126
20102228
20092328
20082634
20073644
20064352
20054960
20044657
20034449
20023752
20014359
20004556
19996079
19984255
19975468
19964660
19953748
19943641
19934957
19924253
19913850
19905572
19895066
19884045
19875573
19867194
19855158
19845260
19835367
19827788
19815268
19806882
19795866

Map of recent crashes in Harpenden

Map of the 24 most recent crashes in Harpenden

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

  • 24 crashes
  • Serious
  • Slight

Recent road crashes in Harpenden

The 24 most recent collisions in Harpenden happened between 13 May 2024 and 19 December 2025.

Severity

Crashes by road in Harpenden

The A1081 has the most collisions in Harpenden, 502 of 1,770 (28%), followed by the B652 (219).

Collisions in Harpenden on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA10815026766100
2ndB652219258249
3rdB653126171225
4thB4874058211
5thA6129161804
6thA66601

Council areas covering Harpenden

Collisions in Harpenden were recorded in 2 council areas. St Albans has 1,761 of 1,770 (99%).

Collisions in Harpenden by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stSt Albans1,7612,19014340
2ndNorth Hertfordshire4400

Postcode district for Harpenden

All 1,770 collisions in Harpenden were in the AL5 postcode district.