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CrashStats

Welwyn road accidents: crash map and statistics

Police recorded 280 road traffic collisions in Welwyn, Welwyn Hatfield, from 1979 to 2025, and 391 people were killed or injured in them. Of those collisions, 3 were fatal and 47 were serious.

No collisions were recorded in 2025, after 5 in 2024.

Collisions since 1979
280
1,618th of 2,851 towns, highest first
Casualties
391
1.40 per collision
Fatal collisions
3
3 people killed
Serious collisions
47
52 seriously injured
Collisions in 2025
0
5 in 2024
Casualties in 2025
0
7 in 2024

Road collision statistics for Welwyn

Collisions by severity, 1979 to 2025

  • Fatal31.1%
  • Serious4717%
  • Slight23082%

What the data shows

  • Welwyn had 23 collisions from 2016 to 2025, 57% fewer than the 54 from 2006 to 2015.
  • 18% of collisions in Welwyn were fatal or serious, against 20% across Great Britain.
  • 38 children under 16 were killed or injured in Welwyn, 9.8% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 43% of collisions in Welwyn.

Where Welwyn ranks among 2,851 towns

Most collisions
1,618th
Most casualties
1,552nd
Most fatal collisions
1,791st
Most serious collisions
1,806th

Collisions by day of the week

  • Monday32 (11%)
  • Tuesday44 (16%)
  • Wednesday49 (18%)
  • Thursday57 (20%)
  • Friday46 (16%)
  • Saturday31 (11%)
  • Sunday21 (7.5%)

Light conditions

  • Daylight204 (73%)
  • Dark, street lights lit58 (21%)
  • Dark, no street lighting9 (3.2%)
  • Dark, street lights unlit5 (1.8%)
  • Dark, lighting unknown4 (1.4%)

Type of road

  • Single carriageway215 (77%)
  • Roundabout31 (11%)
  • Dual carriageway28 (10%)
  • One way street or slip road5 (1.8%)
  • Not recorded1 (0.4%)

Speed limit at the scene

  • 20 mph1 (0.4%)
  • 30 mph158 (56%)
  • 40 mph31 (11%)
  • 60 mph58 (21%)
  • 70 mph32 (11%)

Weather at the time

  • Fine, no high winds212 (76%)
  • Raining, no high winds41 (15%)
  • Fine with high winds7 (2.5%)
  • Raining with high winds6 (2.1%)
  • Fog or mist3 (1.1%)
  • Other2 (0.7%)
  • Not recorded9 (3.2%)

Who was hurt

  • Car occupant237 (61%)
  • Motorcyclist46 (12%)
  • Pedestrian45 (12%)
  • Cyclist37 (9.5%)
  • Van occupant15 (3.8%)
  • Taxi or private hire car occupant5 (1.3%)
  • Other vehicle occupant4 (1%)
  • Bus or coach occupant1 (0.3%)
  • Goods vehicle occupant (over 3.5 tonnes)1 (0.3%)

Source: Department for Transport, STATS19 road safety data

Welwyn road accidents by year

Collisions and casualties in Welwyn, 1979 to 2025

Collisions in Welwyn peaked at 13 in 1985; none were recorded in 2025.

  • Collisions
  • Collisions in 2025
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202500
202457
202311
202200
202122
202023
201923
201858
201733
201634
2015614
201456
201379
201233
201167
201068
200968
200822
200789
200657
2005713
2004710
20031018
20021215
200179
20001023
199999
1998711
1997613
199658
199568
1994913
1993814
199258
199166
199033
198978
198857
19871114
198677
19851316
19841010
19831215
198257
198133
1980611
197978

Map of recent crashes in Welwyn

Map of the 24 most recent crashes in Welwyn

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 Welwyn

The 24 most recent collisions in Welwyn happened between 10 November 2015 and 5 December 2024.

Severity

Crashes by road in Welwyn

The B197 has the most collisions in Welwyn, 63 of 280 (23%), followed by the B656 (45).

Collisions in Welwyn on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stB1976310008
2ndB656455607
3rdA1000354809
4thA1(M)194015
5thA14500

Council area for Welwyn

Welwyn is in Welwyn Hatfield, where police recorded 16,554 collisions from 1979 to 2025. Welwyn accounts for 1.7% of them.

Postcode district for Welwyn

All 280 collisions in Welwyn were in the AL6 postcode district.