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CrashStats

Knebworth road accidents: crash map and statistics

Police recorded 226 road traffic collisions in Knebworth, North Hertfordshire, from 1979 to 2025, and 280 people were killed or injured in them. Of those collisions, 2 were fatal and 42 were serious.

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

Collisions since 1979
226
1,822nd of 2,851 towns, highest first
Casualties
280
1.24 per collision
Fatal collisions
2
2 people killed
Serious collisions
42
46 seriously injured
Collisions in 2025
2
3 in 2024
Casualties in 2025
2
3 in 2024

Road collision statistics for Knebworth

Collisions by severity, 1979 to 2025

  • Fatal20.9%
  • Serious4219%
  • Slight18281%

What the data shows

  • Knebworth had 32 collisions from 2016 to 2025, 9% fewer than the 35 from 2006 to 2015.
  • 19% of collisions in Knebworth were fatal or serious, against 20% across Great Britain.
  • 40 children under 16 were killed or injured in Knebworth, 14% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 32% of collisions in Knebworth.

Where Knebworth ranks among 2,851 towns

Most collisions
1,822nd
Most casualties
1,890th
Most fatal collisions
2,109th
Most serious collisions
1,923rd

Collisions by day of the week

  • Monday33 (15%)
  • Tuesday22 (9.7%)
  • Wednesday30 (13%)
  • Thursday45 (20%)
  • Friday34 (15%)
  • Saturday29 (13%)
  • Sunday33 (15%)

Light conditions

  • Daylight160 (71%)
  • Dark, street lights lit54 (24%)
  • Dark, lighting unknown5 (2.2%)
  • Dark, no street lighting4 (1.8%)
  • Dark, street lights unlit3 (1.3%)

Type of road

  • Single carriageway205 (91%)
  • Roundabout18 (8%)
  • Dual carriageway1 (0.4%)
  • Not recorded2 (0.9%)

Speed limit at the scene

  • 20 mph3 (1.3%)
  • 30 mph208 (92%)
  • 40 mph7 (3.1%)
  • 60 mph8 (3.5%)

Weather at the time

  • Fine, no high winds180 (80%)
  • Raining, no high winds24 (11%)
  • Raining with high winds6 (2.7%)
  • Fine with high winds3 (1.3%)
  • Fog or mist2 (0.9%)
  • Snowing with high winds2 (0.9%)
  • Other5 (2.2%)
  • Not recorded4 (1.8%)

Who was hurt

  • Car occupant124 (44%)
  • Pedestrian62 (22%)
  • Motorcyclist41 (15%)
  • Cyclist39 (14%)
  • Van occupant6 (2.1%)
  • Other vehicle occupant4 (1.4%)
  • Bus or coach occupant3 (1.1%)
  • Taxi or private hire car occupant1 (0.4%)

Source: Department for Transport, STATS19 road safety data

Knebworth road accidents by year

Collisions and casualties in Knebworth, 1979 to 2025

Collisions in Knebworth peaked at 13 in 1988; 2025 had 2.

  • Collisions
  • Collisions in 2025: 2
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202522
202433
202355
202258
202123
202011
201922
201844
201759
201633
201579
201436
201333
201255
201111
201034
200911
200833
200778
200622
200511
200467
200369
200266
200134
200045
199966
1998915
199756
199668
199533
19941019
199322
199255
199199
199011
198945
19881318
198766
1986810
198533
198456
198389
198277
1981911
198089
197968

Map of recent crashes in Knebworth

Map of the 24 most recent crashes in Knebworth

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 Knebworth

The 24 most recent collisions in Knebworth happened between 11 April 2018 and 1 December 2025.

Severity

Crashes by road in Knebworth

Of the 226 collisions in Knebworth, 139 were on the B197.

Collisions in Knebworth on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stB197139176127

Council areas covering Knebworth

Collisions in Knebworth were recorded in 3 council areas. North Hertfordshire has 219 of 226 (97%).

Collisions in Knebworth by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stNorth Hertfordshire219270240
2ndWelwyn Hatfield4601
3rdStevenage3401

Postcode district for Knebworth

All 226 collisions in Knebworth were in the SG3 postcode district.