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CrashStats

SG1 road accidents: crash map and statistics

Police recorded 7,022 road traffic collisions in the SG1 postcode district, Stevenage, from 1979 to 2025, and 9,437 people were killed or injured in them. Of those collisions, 64 were fatal and 1,091 were serious.

In 2025 police recorded 74 collisions, down 8% on 2024 (80).

Collisions since 1979
7,022
184th highest of 2,813 postcode districts
Casualties
9,437
1.34 per collision
Fatal collisions
64
64 people killed
Serious collisions
1,091
1,215 seriously injured
Collisions in 2025
74
Down 8% on 2024
Casualties in 2025
102
Down 12% on 2024

Road collision statistics for SG1

Collisions by severity, 1979 to 2025

  • Fatal640.9%
  • Serious1,09116%
  • Slight5,86784%

What the data shows

  • SG1 had 871 collisions from 2016 to 2025, 38% fewer than the 1,411 from 2006 to 2015.
  • 16% of collisions in SG1 were fatal or serious, against 20% across Great Britain.
  • 1,087 children under 16 were killed or injured in SG1, 12% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 36% of collisions in SG1.

Where SG1 ranks among 2,813 postcode districts

Most collisions
184th
Most casualties
170th
Most fatal collisions
819th
Most serious collisions
298th

Collisions by day of the week

  • Monday1,020 (15%)
  • Tuesday1,060 (15%)
  • Wednesday1,048 (15%)
  • Thursday1,109 (16%)
  • Friday1,191 (17%)
  • Saturday964 (14%)
  • Sunday630 (9%)

Light conditions

  • Daylight5,060 (72%)
  • Dark, street lights lit1,619 (23%)
  • Dark, no street lighting216 (3.1%)
  • Dark, lighting unknown96 (1.4%)
  • Dark, street lights unlit31 (0.4%)

Type of road

  • Single carriageway3,498 (50%)
  • Dual carriageway2,011 (29%)
  • Roundabout1,036 (15%)
  • One way street or slip road388 (5.5%)
  • Not recorded89 (1.3%)

Speed limit at the scene

  • 10 mph1 (under 0.1%)
  • 20 mph57 (0.8%)
  • 30 mph3,148 (45%)
  • 40 mph2,527 (36%)
  • 50 mph6 (0.1%)
  • 60 mph356 (5.1%)
  • 70 mph926 (13%)
  • Not recorded1 (under 0.1%)

Weather at the time

  • Fine, no high winds5,538 (79%)
  • Raining, no high winds913 (13%)
  • Fine with high winds113 (1.6%)
  • Raining with high winds103 (1.5%)
  • Fog or mist78 (1.1%)
  • Snowing, no high winds41 (0.6%)
  • Snowing with high winds8 (0.1%)
  • Other153 (2.2%)
  • Not recorded75 (1.1%)

Who was hurt

  • Car occupant5,807 (62%)
  • Motorcyclist1,422 (15%)
  • Pedestrian932 (9.9%)
  • Cyclist711 (7.5%)
  • Van occupant201 (2.1%)
  • Bus or coach occupant189 (2%)
  • Taxi or private hire car occupant68 (0.7%)
  • Goods vehicle occupant (over 3.5 tonnes)44 (0.5%)
  • Minibus occupant24 (0.3%)
  • Other vehicle occupant20 (0.2%)
  • Other15 (0.2%)
  • Not recorded4 (under 0.1%)

Source: Department for Transport, STATS19 road safety data

SG1 road accidents by year

Collisions and casualties in SG1, 1979 to 2025

Collisions in SG1 peaked at 231 in 2000; 2025 had 74.

  • Collisions
  • Collisions in 2025: 74
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202574102
202480116
202393130
202286129
202179112
20206283
201996140
2018112151
201798147
201691132
2015121185
2014126171
2013111149
2012141194
2011135193
2010119174
2009141200
2008173230
2007171230
2006173262
2005162234
2004171234
2003213294
2002211295
2001211293
2000231320
1999191258
1998211273
1997208275
1996174225
1995180232
1994168225
1993135174
1992148187
1991141179
1990161208
1989169206
1988162196
1987163202
1986147188
1985143189
1984189230
1983174217
1982192259
1981185234
1980153196
1979147184

Map of recent crashes in SG1

Map of the 24 most recent crashes in SG1

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 SG1

The 24 most recent collisions in SG1 happened between 6 October and 19 December 2025.

Severity

Crashes by road in SG1

The A602 has the most collisions in SG1, 1,457 of 7,022 (21%), followed by the A1155 (768).

Collisions in SG1 on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA6021,4571,9009167
2ndA11557681,0705112
3rdA10726478737120
4thA1(M)6179851898
5thB197413609266
6thA1101150211
7thA1070709609
8thB10373846011

Council areas covering SG1

Collisions in SG1 were recorded in 4 council areas. Stevenage has 6,846 of 7,022 (97%).

Collisions in SG1 by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stStevenage6,8469,178641,062
2ndNorth Hertfordshire166245028
3rdEast Hertfordshire3400
4thThree Rivers3301

Town in SG1

Of the 7,022 collisions in SG1, 5,849 (83%) were in Stevenage.