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CrashStats

SG11 road accidents: crash map and statistics

Police recorded 1,477 road traffic collisions in the SG11 postcode district, East Hertfordshire, from 1979 to 2025, and 2,186 people were killed or injured in them. Of those collisions, 36 were fatal and 337 were serious.

In 2025 police recorded 18 collisions, down 18% on 2024 (22).

Collisions since 1979
1,477
1,977th of 2,813 postcode districts, highest first
Casualties
2,186
1.48 per collision
Fatal collisions
36
43 people killed
Serious collisions
337
419 seriously injured
Collisions in 2025
18
Down 18% on 2024
Casualties in 2025
23
Down 36% on 2024

Road collision statistics for SG11

Collisions by severity, 1979 to 2025

  • Fatal362.4%
  • Serious33723%
  • Slight1,10475%

What the data shows

  • SG11 had 160 collisions from 2016 to 2025, 33% fewer than the 239 from 2006 to 2015.
  • 25% of collisions in SG11 were fatal or serious, against 20% across Great Britain.
  • 168 children under 16 were killed or injured in SG11, 7.7% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 43% of collisions in SG11.

Where SG11 ranks among 2,813 postcode districts

Most collisions
1,977th
Most casualties
1,941st
Most fatal collisions
1,639th
Most serious collisions
1,912th

Collisions by day of the week

  • Monday219 (15%)
  • Tuesday199 (13%)
  • Wednesday181 (12%)
  • Thursday219 (15%)
  • Friday268 (18%)
  • Saturday218 (15%)
  • Sunday173 (12%)

Light conditions

  • Daylight1,114 (75%)
  • Dark, no street lighting190 (13%)
  • Dark, street lights lit149 (10%)
  • Dark, lighting unknown16 (1.1%)
  • Dark, street lights unlit8 (0.5%)

Type of road

  • Single carriageway1,248 (84%)
  • Dual carriageway126 (8.5%)
  • Roundabout99 (6.7%)
  • One way street or slip road2 (0.1%)
  • Not recorded2 (0.1%)

Speed limit at the scene

  • 20 mph1 (0.1%)
  • 30 mph228 (15%)
  • 40 mph186 (13%)
  • 50 mph17 (1.2%)
  • 60 mph845 (57%)
  • 70 mph200 (14%)

Weather at the time

  • Fine, no high winds1,120 (76%)
  • Raining, no high winds216 (15%)
  • Fine with high winds34 (2.3%)
  • Fog or mist27 (1.8%)
  • Raining with high winds22 (1.5%)
  • Snowing, no high winds7 (0.5%)
  • Snowing with high winds2 (0.1%)
  • Other33 (2.2%)
  • Not recorded16 (1.1%)

Who was hurt

  • Car occupant1,665 (76%)
  • Motorcyclist200 (9.1%)
  • Van occupant103 (4.7%)
  • Pedestrian80 (3.7%)
  • Cyclist67 (3.1%)
  • Goods vehicle occupant (over 3.5 tonnes)46 (2.1%)
  • Bus or coach occupant12 (0.5%)
  • Taxi or private hire car occupant8 (0.4%)
  • Other vehicle occupant5 (0.2%)

Source: Department for Transport, STATS19 road safety data

SG11 road accidents by year

Collisions and casualties in SG11, 1979 to 2025

Collisions in SG11 peaked at 55 in 1997; 2025 had 18.

  • Collisions
  • Collisions in 2025: 18
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20251823
20242236
2023914
20221114
20211418
20201216
20191727
20181928
20171825
20162031
20151320
20141822
20132840
20122732
20111833
20103039
20091720
20082432
20072748
20063758
20053247
20045087
20034266
20025277
20013950
20004560
19995282
19984666
19975576
19965580
19954575
19943660
19933455
19923451
19913251
19903035
19894771
19883759
19874369
19864052
19852329
19841827
19833548
19824459
19813547
19803049
19794782

Map of recent crashes in SG11

Map of the 24 most recent crashes in SG11

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 SG11

The 24 most recent collisions in SG11 happened between 9 October 2024 and 9 December 2025.

Severity

Crashes by road in SG11

The A120 has the most collisions in SG11, 486 of 1,477 (33%), followed by the A10 (462).

Collisions in SG11 on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA1204867731596
2ndA1046267010131
3rdB1368109172224

Council area for SG11

SG11 is in East Hertfordshire, where police recorded 17,489 collisions from 1979 to 2025. SG11 accounts for 8.4% of them.

Town in SG11

Of the 1,477 collisions in SG11, 143 (9.7%) were in Puckeridge and Standon.