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CrashStats

HP2 road accidents: crash map and statistics

Police recorded 5,326 road traffic collisions in the HP2 postcode district, Dacorum, from 1979 to 2025, and 7,321 people were killed or injured in them. Of those collisions, 59 were fatal and 993 were serious.

In 2025 police recorded 52 collisions, down 16% on 2024 (62).

Collisions since 1979
5,326
481st highest of 2,813 postcode districts
Casualties
7,321
1.37 per collision
Fatal collisions
59
61 people killed
Serious collisions
993
1,137 seriously injured
Collisions in 2025
52
Down 16% on 2024
Casualties in 2025
71
Down 21% on 2024

Road collision statistics for HP2

Collisions by severity, 1979 to 2025

  • Fatal591.1%
  • Serious99319%
  • Slight4,27480%

What the data shows

  • HP2 had 657 collisions from 2016 to 2025, 24% fewer than the 866 from 2006 to 2015.
  • 20% of collisions in HP2 were fatal or serious, against 20% across Great Britain.
  • 883 children under 16 were killed or injured in HP2, 12% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 38% of collisions in HP2.

Where HP2 ranks among 2,813 postcode districts

Most collisions
481st
Most casualties
429th
Most fatal collisions
952nd
Most serious collisions
402nd

Collisions by day of the week

  • Monday758 (14%)
  • Tuesday812 (15%)
  • Wednesday799 (15%)
  • Thursday844 (16%)
  • Friday890 (17%)
  • Saturday710 (13%)
  • Sunday513 (9.6%)

Light conditions

  • Daylight3,767 (71%)
  • Dark, street lights lit1,367 (26%)
  • Dark, no street lighting90 (1.7%)
  • Dark, lighting unknown54 (1%)
  • Dark, street lights unlit48 (0.9%)

Type of road

  • Single carriageway3,470 (65%)
  • Dual carriageway1,305 (25%)
  • Roundabout408 (7.7%)
  • One way street or slip road123 (2.3%)
  • Not recorded20 (0.4%)

Speed limit at the scene

  • 20 mph18 (0.3%)
  • 30 mph3,060 (57%)
  • 40 mph816 (15%)
  • 50 mph115 (2.2%)
  • 60 mph354 (6.6%)
  • 70 mph963 (18%)

Weather at the time

  • Fine, no high winds4,158 (78%)
  • Raining, no high winds785 (15%)
  • Raining with high winds70 (1.3%)
  • Fog or mist59 (1.1%)
  • Fine with high winds54 (1%)
  • Snowing, no high winds27 (0.5%)
  • Snowing with high winds11 (0.2%)
  • Other108 (2%)
  • Not recorded54 (1%)

Who was hurt

  • Car occupant4,812 (66%)
  • Motorcyclist814 (11%)
  • Pedestrian777 (11%)
  • Cyclist457 (6.2%)
  • Van occupant203 (2.8%)
  • Goods vehicle occupant (over 3.5 tonnes)89 (1.2%)
  • Bus or coach occupant52 (0.7%)
  • Taxi or private hire car occupant46 (0.6%)
  • Minibus occupant37 (0.5%)
  • Other vehicle occupant22 (0.3%)
  • Other10 (0.1%)
  • Not recorded2 (under 0.1%)

Source: Department for Transport, STATS19 road safety data

HP2 road accidents by year

Collisions and casualties in HP2, 1979 to 2025

Collisions in HP2 peaked at 183 in 2000; 2025 had 52.

  • Collisions
  • Collisions in 2025: 52
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20255271
20246290
20236186
202269103
20216794
20204962
20196685
20187095
201779113
201682115
201580119
201483109
20136385
201285120
201185103
201082102
200985130
200891124
200794137
2006118165
2005119157
2004124184
2003134188
2002146201
2001179264
2000183263
1999169237
1998180253
1997153209
1996177251
1995148214
1994130170
1993149216
1992148209
1991127173
1990136195
1989145183
1988137183
1987137171
1986163219
1985117155
1984116156
1983112140
1982107136
1981122151
1980129181
1979116154

Map of recent crashes in HP2

Map of the 24 most recent crashes in HP2

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

  • 24 crashes
  • Fatal
  • Serious
  • Slight

Recent road crashes in HP2

The 24 most recent collisions in HP2 happened between 25 June and 31 December 2025.

Severity

Crashes by road in HP2

The M1 has the most collisions in HP2, 817 of 5,326 (15%), followed by the A4147 (729).

Collisions in HP2 on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stM18171,3354125
2ndA41477299677133
3rdA41469196714112
4thB4875067381099
5thA41466900

Council areas covering HP2

Collisions in HP2 were recorded in 5 council areas. Dacorum has 4,362 of 5,326 (82%).

Collisions in HP2 by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stDacorum4,3625,76849844
2ndSt Albans9461,5309148
3rdLuton3310
4thNorth Hertfordshire3301
5thThree Rivers3400

Town in HP2

Of the 5,326 collisions in HP2, 3,976 (75%) were in Hemel Hempstead.