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CrashStats

SG12 road accidents: crash map and statistics

Police recorded 4,276 road traffic collisions in the SG12 postcode district, East Hertfordshire, from 1979 to 2025, and 6,037 people were killed or injured in them. Of those collisions, 78 were fatal and 828 were serious.

In 2025 police recorded 28 collisions, down 38% on 2024 (45).

Collisions since 1979
4,276
780th highest of 2,813 postcode districts
Casualties
6,037
1.41 per collision
Fatal collisions
78
82 people killed
Serious collisions
828
1,004 seriously injured
Collisions in 2025
28
Down 38% on 2024
Casualties in 2025
41
Down 34% on 2024

Road collision statistics for SG12

Collisions by severity, 1979 to 2025

  • Fatal781.8%
  • Serious82819%
  • Slight3,37079%

What the data shows

  • SG12 had 467 collisions from 2016 to 2025, 32% fewer than the 687 from 2006 to 2015.
  • 21% of collisions in SG12 were fatal or serious, against 20% across Great Britain.
  • 545 children under 16 were killed or injured in SG12, 9.1% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 42% of collisions in SG12.

Where SG12 ranks among 2,813 postcode districts

Most collisions
780th
Most casualties
690th
Most fatal collisions
534th
Most serious collisions
678th

Collisions by day of the week

  • Monday602 (14%)
  • Tuesday627 (15%)
  • Wednesday654 (15%)
  • Thursday603 (14%)
  • Friday734 (17%)
  • Saturday604 (14%)
  • Sunday452 (11%)

Light conditions

  • Daylight3,148 (74%)
  • Dark, no street lighting563 (13%)
  • Dark, street lights lit509 (12%)
  • Dark, lighting unknown42 (1%)
  • Dark, street lights unlit14 (0.3%)

Type of road

  • Single carriageway3,145 (74%)
  • Dual carriageway737 (17%)
  • Roundabout240 (5.6%)
  • One way street or slip road152 (3.6%)
  • Not recorded2 (under 0.1%)

Speed limit at the scene

  • 20 mph18 (0.4%)
  • 30 mph1,532 (36%)
  • 40 mph288 (6.7%)
  • 50 mph54 (1.3%)
  • 60 mph1,524 (36%)
  • 70 mph860 (20%)

Weather at the time

  • Fine, no high winds3,294 (77%)
  • Raining, no high winds637 (15%)
  • Fog or mist67 (1.6%)
  • Fine with high winds62 (1.4%)
  • Raining with high winds39 (0.9%)
  • Snowing, no high winds22 (0.5%)
  • Snowing with high winds5 (0.1%)
  • Other87 (2%)
  • Not recorded63 (1.5%)

Who was hurt

  • Car occupant4,282 (71%)
  • Motorcyclist604 (10%)
  • Pedestrian463 (7.7%)
  • Cyclist334 (5.5%)
  • Van occupant166 (2.7%)
  • Goods vehicle occupant (over 3.5 tonnes)65 (1.1%)
  • Bus or coach occupant41 (0.7%)
  • Minibus occupant27 (0.4%)
  • Taxi or private hire car occupant27 (0.4%)
  • Other vehicle occupant21 (0.3%)
  • Other6 (0.1%)
  • Not recorded1 (under 0.1%)

Source: Department for Transport, STATS19 road safety data

SG12 road accidents by year

Collisions and casualties in SG12, 1979 to 2025

Collisions in SG12 peaked at 142 in 1997; 2025 had 28.

  • Collisions
  • Collisions in 2025: 28
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20252841
20244562
20235075
20223757
20214868
20203546
20194161
20185183
20176188
201671101
20154867
20146580
20135071
20127593
20116694
20107497
20096275
20086594
200788124
200694142
2005102154
2004109160
2003112157
2002132182
2001119174
2000111168
1999121160
1998127195
1997142196
1996114168
1995142202
1994124200
1993135192
1992101134
1991106140
1990116170
1989141198
1988103136
198796125
1986115156
1985110151
1984105150
1983104133
1982113161
1981100148
1980100151
1979122157

Map of recent crashes in SG12

Map of the 24 most recent crashes in SG12

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 SG12

The 24 most recent collisions in SG12 happened between 16 May and 28 December 2025.

Severity

Crashes by road in SG12

The A10 has the most collisions in SG12, 666 of 4,276 (16%), followed by the A1170 (660).

Collisions in SG12 on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA1066694912120
2ndA11706608749109
3rdA41452676614101
4thB1004248352656
5thA602226333538
6thB181222340341
7thA119167224430
8thB1001142208536
9thB158142229436
10thB180142219237
11thB150295158512

Council areas covering SG12

Collisions in SG12 were recorded in 4 council areas. East Hertfordshire has 4,247 of 4,276 (99%).

Collisions in SG12 by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stEast Hertfordshire4,2476,00278827
2ndBroxbourne91201
3rdHertsmere8900
4thNorth Hertfordshire4500

Towns in SG12

Collisions in SG12 were recorded in 4 towns, led by Ware (1,094) and Stanstead Abbotts (211).