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CrashStats

AL1 road accidents: crash map and statistics

Police recorded 6,027 road traffic collisions in the AL1 postcode district, St Albans, from 1979 to 2025, and 7,608 people were killed or injured in them. Of those collisions, 55 were fatal and 976 were serious.

In 2025 police recorded 49 collisions, up 2% on 2024 (48).

Collisions since 1979
6,027
320th highest of 2,813 postcode districts
Casualties
7,608
1.26 per collision
Fatal collisions
55
57 people killed
Serious collisions
976
1,071 seriously injured
Collisions in 2025
49
Up 2% on 2024
Casualties in 2025
65
Down 3% on 2024

Road collision statistics for AL1

Collisions by severity, 1979 to 2025

  • Fatal550.9%
  • Serious97616%
  • Slight4,99683%

What the data shows

  • AL1 had 641 collisions from 2016 to 2025, 36% fewer than the 1,000 from 2006 to 2015.
  • 17% of collisions in AL1 were fatal or serious, against 20% across Great Britain.
  • 872 children under 16 were killed or injured in AL1, 12% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 36% of collisions in AL1.

Where AL1 ranks among 2,813 postcode districts

Most collisions
320th
Most casualties
366th
Most fatal collisions
1,050th
Most serious collisions
421st

Collisions by day of the week

  • Monday815 (14%)
  • Tuesday916 (15%)
  • Wednesday917 (15%)
  • Thursday976 (16%)
  • Friday1,098 (18%)
  • Saturday774 (13%)
  • Sunday531 (8.8%)

Light conditions

  • Daylight4,321 (72%)
  • Dark, street lights lit1,566 (26%)
  • Dark, lighting unknown76 (1.3%)
  • Dark, street lights unlit37 (0.6%)
  • Dark, no street lighting27 (0.4%)

Type of road

  • Single carriageway4,993 (83%)
  • Roundabout526 (8.7%)
  • Dual carriageway391 (6.5%)
  • One way street or slip road103 (1.7%)
  • Not recorded14 (0.2%)

Speed limit at the scene

  • 20 mph88 (1.5%)
  • 30 mph4,947 (82%)
  • 40 mph294 (4.9%)
  • 50 mph7 (0.1%)
  • 60 mph339 (5.6%)
  • 70 mph351 (5.8%)
  • Not recorded1 (under 0.1%)

Weather at the time

  • Fine, no high winds4,784 (79%)
  • Raining, no high winds862 (14%)
  • Fine with high winds69 (1.1%)
  • Raining with high winds58 (1%)
  • Fog or mist47 (0.8%)
  • Snowing, no high winds37 (0.6%)
  • Snowing with high winds6 (0.1%)
  • Other87 (1.4%)
  • Not recorded77 (1.3%)

Who was hurt

  • Car occupant3,865 (51%)
  • Pedestrian1,341 (18%)
  • Motorcyclist1,085 (14%)
  • Cyclist963 (13%)
  • Van occupant129 (1.7%)
  • Bus or coach occupant98 (1.3%)
  • Taxi or private hire car occupant52 (0.7%)
  • Goods vehicle occupant (over 3.5 tonnes)34 (0.4%)
  • Minibus occupant20 (0.3%)
  • Other vehicle occupant11 (0.1%)
  • Other7 (0.1%)
  • Not recorded3 (under 0.1%)

Source: Department for Transport, STATS19 road safety data

AL1 road accidents by year

Collisions and casualties in AL1, 1979 to 2025

Collisions in AL1 peaked at 188 in 1988; 2025 had 49.

  • Collisions
  • Collisions in 2025: 49
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20254965
20244867
20236780
20227997
20216081
20206277
20195765
20186891
20177997
20167293
20158099
201488104
201387107
201286101
2011107131
201096114
2009100123
2008106137
2007126165
2006124156
2005126153
2004141182
2003139180
2002168231
2001147192
2000178228
1999169215
1998182240
1997146171
1996154208
1995169215
1994145179
1993158192
1992132163
1991155201
1990163200
1989182225
1988188235
1987168209
1986181217
1985179230
1984185233
1983150187
1982153189
1981181236
1980164208
1979183239

Map of recent crashes in AL1

Map of the 24 most recent crashes in AL1

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

  • 24 crashes
  • Serious
  • Slight

Recent road crashes in AL1

The 24 most recent collisions in AL1 happened between 12 July and 30 December 2025.

Severity

Crashes by road in AL1

The A1081 has the most collisions in AL1, 1,365 of 6,027 (23%), followed by the A5183 (558).

Collisions in AL1 on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA10811,3651,74412230
2ndA51835587108100
3rdA414554714368
4thA1057480613673
5thB691278331048
6thB651194254137
7thA4056474312
8thB46305264110
9thB64244553010
10thM10446014
11thB5378396206
12thA6131902
13thA41479901
14thA4127914
15thA53302

Council areas covering AL1

Collisions in AL1 were recorded in 5 council areas. St Albans has 6,009 of 6,027 (99.7%).

Collisions in AL1 by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stSt Albans6,0097,58655974
2ndWelwyn Hatfield7801
3rdNorth Hertfordshire4501
4thBroxbourne3500
5thStevenage3300

Towns in AL1

Collisions in AL1 were recorded in 2 towns, led by St Albans (5,154) and London Colney (54).