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CrashStats

Woolmer Green road accidents: crash map and statistics

Police recorded 420 road traffic collisions in Woolmer Green, Welwyn Hatfield, from 1979 to 2025, and 643 people were killed or injured in them. Of those collisions, 9 were fatal and 74 were serious.

In 2025 police recorded 2 collisions, down from 3 in 2024.

Collisions since 1979
420
1,276th highest of 2,851 towns
Casualties
643
1.53 per collision
Fatal collisions
9
10 people killed
Serious collisions
74
100 seriously injured
Collisions in 2025
2
3 in 2024
Casualties in 2025
2
3 in 2024

Road collision statistics for Woolmer Green

Collisions by severity, 1979 to 2025

  • Fatal92.1%
  • Serious7418%
  • Slight33780%

What the data shows

  • Woolmer Green had 47 collisions from 2016 to 2025, 47% fewer than the 89 from 2006 to 2015.
  • 20% of collisions in Woolmer Green were fatal or serious, against 20% across Great Britain.
  • 52 children under 16 were killed or injured in Woolmer Green, 8.1% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 33% of collisions in Woolmer Green.

Where Woolmer Green ranks among 2,851 towns

Most collisions
1,276th
Most casualties
1,149th
Most fatal collisions
915th
Most serious collisions
1,376th

Collisions by day of the week

  • Monday64 (15%)
  • Tuesday62 (15%)
  • Wednesday75 (18%)
  • Thursday57 (14%)
  • Friday71 (17%)
  • Saturday39 (9.3%)
  • Sunday52 (12%)

Light conditions

  • Daylight303 (72%)
  • Dark, street lights lit66 (16%)
  • Dark, no street lighting45 (11%)
  • Dark, street lights unlit5 (1.2%)
  • Dark, lighting unknown1 (0.2%)

Type of road

  • Single carriageway280 (67%)
  • Dual carriageway140 (33%)

Speed limit at the scene

  • 30 mph60 (14%)
  • 40 mph206 (49%)
  • 60 mph15 (3.6%)
  • 70 mph139 (33%)

Weather at the time

  • Fine, no high winds344 (82%)
  • Raining, no high winds54 (13%)
  • Fine with high winds4 (1%)
  • Fog or mist4 (1%)
  • Snowing, no high winds3 (0.7%)
  • Raining with high winds2 (0.5%)
  • Other7 (1.7%)
  • Not recorded2 (0.5%)

Who was hurt

  • Car occupant460 (72%)
  • Motorcyclist89 (14%)
  • Pedestrian34 (5.3%)
  • Cyclist25 (3.9%)
  • Van occupant25 (3.9%)
  • Goods vehicle occupant (over 3.5 tonnes)5 (0.8%)
  • Bus or coach occupant2 (0.3%)
  • Taxi or private hire car occupant2 (0.3%)
  • Horse rider1 (0.2%)

Source: Department for Transport, STATS19 road safety data

Woolmer Green road accidents by year

Collisions and casualties in Woolmer Green, 1979 to 2025

Collisions in Woolmer Green peaked at 17 in 1999; 2025 had 2.

  • Collisions
  • Collisions in 2025: 2
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202522
202433
202334
202222
202111
202046
2019912
2018612
2017611
20161117
201558
20141114
2013913
2012812
201155
2010812
20091319
2008914
20071316
2006814
20051323
20041423
20031525
20021221
2001915
20001013
19991728
19981016
19971014
19961626
19951422
19941119
19931125
1992916
1991610
19901216
19891520
19881013
19871214
1986917
198578
1984812
198368
198279
198133
1980713
19791117

Map of recent crashes in Woolmer Green

Map of the 24 most recent crashes in Woolmer Green

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 Woolmer Green

The 24 most recent collisions in Woolmer Green happened between 15 January 2019 and 26 October 2025.

Severity

Crashes by road in Woolmer Green

The B197 has the most collisions in Woolmer Green, 203 of 420 (48%), followed by the A1(M) (110).

Collisions in Woolmer Green on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stB197203301543
2ndA1(M)110194413
3rdA1285104
4thB656213104

Council areas covering Woolmer Green

Collisions in Woolmer Green were recorded in 2 council areas. Welwyn Hatfield has 371 of 420 (88%).

Collisions in Woolmer Green by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stWelwyn Hatfield371561864
2ndNorth Hertfordshire4881110

Postcode districts in Woolmer Green

Collisions in Woolmer Green were recorded in 2 postcode districts, led by AL6 (309) and SG3 (111).