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CrashStats

Welwyn Hatfield road accidents in 2021: crash map and statistics

Police recorded 165 road traffic collisions in Welwyn Hatfield in 2021, and 218 people were killed or injured in them. Of those collisions, 4 were fatal and 33 were serious.

Collisions were up 23% on 2020 (134), and casualties rose from 184.

Across all years from 1979 to 2025, police recorded 16,554 collisions in Welwyn Hatfield.

Collisions in 2021
165
Up 23% on 2020
Casualties in 2021
218
Up 18% on 2020
Fatal collisions
4
2.4% of collisions
Serious collisions
33
20% of collisions

Crash severity in Welwyn Hatfield in 2021

2.4% of collisions in Welwyn Hatfield in 2021 were fatal and 20% serious, against 1.4% and 19% in Welwyn Hatfield from 1979 to 2025.

Collisions by worst injury

  • Fatal42.4%
  • Serious3320%
  • Slight12878%

People hurt, by injury

  • Fatal41.8%
  • Serious3717%
  • Slight17781%

Welwyn Hatfield road accidents by year

Collisions and casualties in Welwyn Hatfield, 1979 to 2025

Collisions peaked at 493 in 1997. 2021 is highlighted, with 165, up 23% on 2020.

  • Collisions
  • Collisions in 2021: 165
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
2025122160
2024172248
2023170218
2022186264
2021165218
2020134184
2019233347
2018229343
2017244343
2016293421
2015295407
2014323451
2013262338
2012290409
2011241341
2010257358
2009291405
2008349468
2007402546
2006397582
2005399554
2004457641
2003438628
2002474657
2001455619
2000454650
1999459650
1998462723
1997493662
1996459656
1995403573
1994400544
1993385527
1992376526
1991346481
1990426572
1989447595
1988408564
1987384509
1986477624
1985418541
1984416532
1983429557
1982432583
1981395520
1980387519
1979420582

When and where crashes happen in Welwyn Hatfield in 2021

Collisions by day of the week

  • Monday22 (13%)
  • Tuesday30 (18%)
  • Wednesday22 (13%)
  • Thursday22 (13%)
  • Friday22 (13%)
  • Saturday25 (15%)
  • Sunday22 (13%)

Collisions by time of day

  • 00:00 to 02:594 (2.4%)
  • 03:00 to 05:592 (1.2%)
  • 06:00 to 08:5918 (11%)
  • 09:00 to 11:5927 (16%)
  • 12:00 to 14:5934 (21%)
  • 15:00 to 17:5943 (26%)
  • 18:00 to 20:5926 (16%)
  • 21:00 to 23:5911 (6.7%)

Collisions by month

  • January18 (11%)
  • February14 (8.5%)
  • March16 (9.7%)
  • April15 (9.1%)
  • May8 (4.8%)
  • June9 (5.5%)
  • July18 (11%)
  • August6 (3.6%)
  • September8 (4.8%)
  • October23 (14%)
  • November21 (13%)
  • December9 (5.5%)

Light conditions

  • Daylight119 (72%)
  • Dark, street lights lit35 (21%)
  • Dark, no street lighting6 (3.6%)
  • Dark, lighting unknown5 (3%)

Weather at the time

  • Fine, no high winds136 (82%)
  • Raining, no high winds17 (10%)
  • Fine with high winds1 (0.6%)
  • Fog or mist1 (0.6%)
  • Raining with high winds1 (0.6%)
  • Snowing, no high winds1 (0.6%)
  • Other7 (4.2%)
  • Not recorded1 (0.6%)

Road surface

  • Dry124 (75%)
  • Wet or damp34 (21%)
  • Frost or ice3 (1.8%)
  • Not recorded4 (2.4%)

Speed limit at the scene

  • 20 mph7 (4.2%)
  • 30 mph69 (42%)
  • 40 mph31 (19%)
  • 50 mph9 (5.5%)
  • 60 mph25 (15%)
  • 70 mph24 (15%)

Type of road

  • Single carriageway106 (64%)
  • Dual carriageway34 (21%)
  • Roundabout19 (12%)
  • One way street or slip road5 (3%)
  • Not recorded1 (0.6%)

Source: Department for Transport, STATS19 road safety data

Who was hurt in road crashes in Welwyn Hatfield in 2021

Casualties by road user

  • Car occupant137 (63%)
  • Pedestrian24 (11%)
  • Cyclist23 (11%)
  • Motorcyclist18 (8.3%)
  • Van occupant7 (3.2%)
  • Bus or coach occupant5 (2.3%)
  • Goods vehicle occupant (weight unknown)1 (0.5%)
  • Mobility scooter rider1 (0.5%)
  • Taxi or private hire car occupant1 (0.5%)
  • Not recorded1 (0.5%)

Casualties by age

  • 0 to 52 (0.9%)
  • 6 to 101 (0.5%)
  • 11 to 156 (2.8%)
  • 16 to 2016 (7.3%)
  • 21 to 2536 (17%)
  • 26 to 3544 (20%)
  • 36 to 4529 (13%)
  • 46 to 5537 (17%)
  • 56 to 6525 (11%)
  • 66 to 757 (3.2%)
  • Over 758 (3.7%)
  • Not recorded7 (3.2%)

Drivers, passengers and pedestrians

  • Driver or rider165 (76%)
  • Passenger29 (13%)
  • Pedestrian24 (11%)

Vehicles involved

  • Car240 (75%)
  • Pedal cycle25 (7.8%)
  • Motorcycle20 (6.3%)
  • Van or goods vehicle up to 3.5 tonnes20 (6.3%)
  • Goods vehicle over 3.5 tonnes4 (1.3%)
  • Personal powered transporter (e-scooter or similar)3 (0.9%)
  • Goods vehicle, weight unknown2 (0.6%)
  • Taxi or private hire car2 (0.6%)
  • Bus or coach1 (0.3%)
  • Other vehicle1 (0.3%)
  • Other1 (0.3%)
  • Not recorded1 (0.3%)

Source: Department for Transport, STATS19 road safety data

Crash map for Welwyn Hatfield in 2021

Map of the last 24 crashes of 2021 and the 10 busiest accident hotspots in Welwyn Hatfield

Use the arrow keys to move the map and the plus and minus keys to zoom.

  • 24 crashes
  • Fatal
  • Serious
  • Slight

Accident hotspots (10)

How Welwyn Hatfield ranked among 350 areas in 2021

Of the 350 areas in England, Scotland and Wales, Welwyn Hatfield had fewer road collisions than 225 of them in 2021.

Collisions
226th
of 350 areas, highest first
Casualties
225th
of 350 areas, highest first
Fatal collisions
117th
highest of 350 areas
Serious collisions
259th
of 350 areas, highest first

Accident hotspots in Welwyn Hatfield in 2021

Hatfield Central, Welwyn Hatfield, AL10 0BU area was the busiest accident hotspot in Welwyn Hatfield in 2021, with 15 collisions, 5 of them serious.

Roads in Welwyn Hatfield with the most crashes in 2021

The A1000 had the most collisions in Welwyn Hatfield in 2021: 30, including 1 fatal and 5 serious.

Roads ranked by collisions in Welwyn Hatfield, 2021
RankRoadCollisionsCasualtiesFatalSerious
1stA1000303915
2ndA1(M)233607
3rdB19781011
4thA4146600
5thA61296902
6thA10015601
7thB64265602
8thB1564502
9thA10572711
10thB1582201
11thB10001100
12thB1951200

Towns in Welwyn Hatfield: crashes in 2021

Hatfield had the most collisions of any town in Welwyn Hatfield in 2021: 37.

Postcode districts in Welwyn Hatfield: crashes in 2021

AL10 had the most collisions of any postcode district in Welwyn Hatfield in 2021: 49.

Latest crashes in Welwyn Hatfield in 2021

Of the last 24 crashes in Welwyn Hatfield in 2021, 1 was fatal and 2 were serious. The last was on 21 December 2021.

Severity

Welwyn Hatfield road accidents in other years