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CrashStats

Welwyn Hatfield road accidents: crash map and statistics

Police recorded 16,554 road traffic collisions in Welwyn Hatfield from 1979 to 2025, and 22,840 people were killed or injured in them. Of those collisions, 232 were fatal and 3,068 were serious.

In 2025 police recorded 122 collisions, down 29% on 2024 (172), and casualties fell from 248 to 160.

Collisions, 1979 to 2025
16,554
130th lowest of 351 areas
Casualties
22,840
1.38 per collision
Fatal collisions
232
1.4% of collisions
Collisions in 2025
122
Down 29% on 2024

Crash severity in Welwyn Hatfield

1.4% of collisions in Welwyn Hatfield from 1979 to 2025 were fatal and 19% serious, against 1.6% and 18% across Great Britain.

Collisions by worst injury

  • Fatal2321.4%
  • Serious3,06819%
  • Slight13,25480%

People hurt, by injury

  • Fatal2511.1%
  • Serious3,60716%
  • Slight18,98283%

Welwyn Hatfield road accidents by year

Collisions and casualties in Welwyn Hatfield, 1979 to 2025

Collisions peaked at 493 in 1997. In 2025 there were 122, down 29% on 2024.

  • Collisions
  • Collisions in 2025: 122
  • 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

Collisions by day of the week

  • Monday2,286 (14%)
  • Tuesday2,490 (15%)
  • Wednesday2,507 (15%)
  • Thursday2,617 (16%)
  • Friday2,796 (17%)
  • Saturday2,099 (13%)
  • Sunday1,759 (11%)

Collisions by time of day

  • 00:00 to 02:59580 (3.5%)
  • 03:00 to 05:59256 (1.5%)
  • 06:00 to 08:592,542 (15%)
  • 09:00 to 11:592,223 (13%)
  • 12:00 to 14:592,870 (17%)
  • 15:00 to 17:593,970 (24%)
  • 18:00 to 20:592,601 (16%)
  • 21:00 to 23:591,512 (9.1%)

Collisions by month

  • January1,469 (8.9%)
  • February1,253 (7.6%)
  • March1,265 (7.6%)
  • April1,174 (7.1%)
  • May1,355 (8.2%)
  • June1,335 (8.1%)
  • July1,297 (7.8%)
  • August1,195 (7.2%)
  • September1,394 (8.4%)
  • October1,609 (9.7%)
  • November1,721 (10%)
  • December1,487 (9%)

Light conditions

  • Daylight11,773 (71%)
  • Dark, street lights lit3,317 (20%)
  • Dark, no street lighting1,160 (7%)
  • Dark, lighting unknown163 (1%)
  • Dark, street lights unlit141 (0.9%)

Weather at the time

  • Fine, no high winds12,946 (78%)
  • Raining, no high winds2,382 (14%)
  • Fine with high winds214 (1.3%)
  • Raining with high winds189 (1.1%)
  • Fog or mist158 (1%)
  • Snowing, no high winds101 (0.6%)
  • Snowing with high winds19 (0.1%)
  • Other352 (2.1%)
  • Not recorded193 (1.2%)

Road surface

  • Dry10,087 (61%)
  • Wet or damp5,833 (35%)
  • Frost or ice453 (2.7%)
  • Snow93 (0.6%)
  • Flood over 3cm deep35 (0.2%)
  • Oil or diesel5 (under 0.1%)
  • Mud3 (under 0.1%)
  • Not recorded45 (0.3%)

Speed limit at the scene

  • 10 mph1 (under 0.1%)
  • 20 mph57 (0.3%)
  • 30 mph7,599 (46%)
  • 40 mph1,785 (11%)
  • 50 mph821 (5%)
  • 60 mph3,880 (23%)
  • 70 mph2,411 (15%)

Type of road

  • Single carriageway11,181 (68%)
  • Dual carriageway2,693 (16%)
  • Roundabout1,911 (12%)
  • One way street or slip road690 (4.2%)
  • Not recorded79 (0.5%)

Source: Department for Transport, STATS19 road safety data

Who is hurt in road crashes in Welwyn Hatfield

Casualties by road user

  • Car occupant15,106 (66%)
  • Motorcyclist2,655 (12%)
  • Cyclist1,940 (8.5%)
  • Pedestrian1,836 (8%)
  • Van occupant586 (2.6%)
  • Bus or coach occupant193 (0.8%)
  • Goods vehicle occupant (over 3.5 tonnes)185 (0.8%)
  • Taxi or private hire car occupant153 (0.7%)
  • Minibus occupant79 (0.3%)
  • Other vehicle occupant73 (0.3%)
  • Other28 (0.1%)
  • Not recorded6 (under 0.1%)

Casualties by age

  • 0 to 5369 (1.6%)
  • 6 to 10724 (3.2%)
  • 11 to 151,133 (5%)
  • 16 to 204,433 (19%)
  • 21 to 253,303 (14%)
  • 26 to 354,237 (19%)
  • 36 to 453,255 (14%)
  • 46 to 552,265 (9.9%)
  • 56 to 651,512 (6.6%)
  • 66 to 75878 (3.8%)
  • Over 75588 (2.6%)
  • Not recorded143 (0.6%)

Drivers, passengers and pedestrians

  • Driver or rider15,631 (68%)
  • Passenger5,373 (24%)
  • Pedestrian1,836 (8%)

Vehicles involved

  • Car23,464 (75%)
  • Motorcycle2,668 (8.5%)
  • Pedal cycle1,982 (6.3%)
  • Van or goods vehicle up to 3.5 tonnes1,437 (4.6%)
  • Goods vehicle over 3.5 tonnes944 (3%)
  • Bus or coach293 (0.9%)
  • Taxi or private hire car250 (0.8%)
  • Other vehicle181 (0.6%)
  • Minibus99 (0.3%)
  • Goods vehicle, weight unknown38 (0.1%)
  • Other44 (0.1%)
  • Not recorded14 (under 0.1%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes and hotspots in Welwyn Hatfield

Map of the 24 most recent crashes 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
  • Serious
  • Slight

Accident hotspots (10)

How Welwyn Hatfield ranks among 351 areas

Of the 351 areas in England, Scotland and Wales, Welwyn Hatfield had the 130th fewest road collisions from 1979 to 2025.

Collisions
130th
lowest of 351 areas
Casualties
133rd
lowest of 351 areas
Fatal collisions
82nd
lowest of 351 areas
Serious collisions
117th
lowest of 351 areas
Areas ranked by collisions, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
219thCaerphilly16,71823,0293123,148
220thHalton16,67023,0792242,666
221stScottish Borders16,59823,7505594,571
222ndWelwyn Hatfield (this area)16,55422,8402323,068
223rdEast Hampshire16,51122,7553753,980
224thSurrey Heath16,48622,9212002,606
225thHavant16,38220,3781643,204

Accident hotspots in Welwyn Hatfield

Hatfield South West, Welwyn Hatfield, AL10 9TB area is the busiest accident hotspot in Welwyn Hatfield, with 616 collisions from 2001 to 2025, 8 of them fatal.

Roads in Welwyn Hatfield with the most crashes

The A1000 had the most collisions in Welwyn Hatfield from 1979 to 2025: 2,354, including 46 fatal and 454 serious.

Roads ranked by collisions in Welwyn Hatfield, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA10002,3543,33746454
2ndA1(M)1,3602,09434215
3rdA10018401,24913127
4thB1978171,17314167
5thA41472497314108
6thB195509716590
7thA1491719776
8thA6129428569683
9thB6426407513264
10thB156292397167
11thA1057283379657
12thB158255365366
13thB1000210321247
14thB157194292440
15thB653171259340
16thB6567092012
17thA1214960013
18thM25467304
19thA405172237
20thA1564400

Towns in Welwyn Hatfield

Welwyn Garden City had the most collisions of any town in Welwyn Hatfield from 1979 to 2025: 4,201.

Postcode districts in Welwyn Hatfield

AL10 had the most collisions of any postcode district in Welwyn Hatfield from 1979 to 2025: 4,019.

Latest crashes in Welwyn Hatfield

Of the latest 24 crashes in Welwyn Hatfield, none were fatal and 4 were serious. The most recent was on 22 December 2025.

Severity