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CrashStats

A6129 accidents: crash map and statistics

Police recorded 581 collisions on the A6129 from 1979 to 2025, with 783 casualties. Of those crashes, 8 were fatal and 136 serious, and 8 people were killed.

In 2025 there were 3 collisions on the A6129, level with 2024, with 3 casualties.

Collisions since 1979
581
1,734th highest of 4,923 roads
Casualties
783
1.35 per collision
Fatal collisions
8
8 people killed
Serious collisions
136
157 seriously injured
Collisions in 2025
3
Level with 2024
Casualties in 2025
3
Down 40% on 2024

Crash severity on the A6129

On the A6129, 1.4% of collisions were fatal and 23% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal81.4%
  • Serious13623%
  • Slight43775%

Where the A6129 ranks among 4,923 roads

Most collisions
1,734th
Most casualties
1,761st
Most fatal collisions
1,937th
Most serious collisions
1,480th

A6129 accidents by year

Collisions on the A6129 peaked at 46 in 1981 and were down to 3 in 2025.

Collisions and casualties on the A6129, 1979 to 2025

  • Collisions
  • Collisions in 2025: 3
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202533
202435
202311
202222
202169
202067
201911
201878
2017814
201623
201589
201446
201378
2012815
201169
201057
200979
20081115
20071215
2006812
200556
200478
20031417
20021014
2001912
20001521
19991823
19981826
19971619
19961524
19951012
1994712
19931416
1992811
199166
19901012
19891015
19881216
19871318
198656
19851515
19842939
19833848
19823449
19814658
19804362
19793960

When crashes happen on the A6129

Wednesday has the most collisions on the A6129 (104), and 3pm to 6pm is the busiest time of day (128).

Collisions by day of the week

  • Monday72 (12%)
  • Tuesday82 (14%)
  • Wednesday104 (18%)
  • Thursday91 (16%)
  • Friday89 (15%)
  • Saturday78 (13%)
  • Sunday65 (11%)

Collisions by time of day

  • Midnight to 3am23 (4%)
  • 3am to 6am6 (1%)
  • 6am to 9am90 (15%)
  • 9am to noon74 (13%)
  • Noon to 3pm101 (17%)
  • 3pm to 6pm128 (22%)
  • 6pm to 9pm82 (14%)
  • 9pm to midnight77 (13%)

Collisions by month

  • January50 (8.6%)
  • February41 (7.1%)
  • March47 (8.1%)
  • April44 (7.6%)
  • May45 (7.7%)
  • June47 (8.1%)
  • July49 (8.4%)
  • August41 (7.1%)
  • September56 (9.6%)
  • October45 (7.7%)
  • November54 (9.3%)
  • December62 (11%)

Light conditions at the time

  • Daylight405 (70%)
  • Dark, street lights lit129 (22%)
  • Dark, no street lighting42 (7.2%)
  • Dark, lighting unknown4 (0.7%)
  • Dark, street lights unlit1 (0.2%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A6129 crashes

On the A6129, 34% of collisions happened where the speed limit was 40 mph and 62% on a dry road surface.

Speed limit at the scene

  • 30 mph182 (31%)
  • 40 mph198 (34%)
  • 50 mph2 (0.3%)
  • 60 mph109 (19%)
  • 70 mph90 (15%)

Weather at the time

  • Fine, no high winds459 (79%)
  • Raining, no high winds79 (14%)
  • Fine with high winds12 (2.1%)
  • Fog or mist8 (1.4%)
  • Other16 (2.8%)
  • Not recorded7 (1.2%)

Road surface

  • Dry362 (62%)
  • Wet or damp199 (34%)
  • Frost or ice13 (2.2%)
  • Snow7 (1.2%)

Type of road

  • Single carriageway396 (68%)
  • Dual carriageway132 (23%)
  • Roundabout51 (8.8%)
  • One way street or slip road1 (0.2%)
  • Not recorded1 (0.2%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A6129 crashes

Car occupants make up 61% of the people killed or injured on the A6129, followed by motorcyclists (13%).

Casualties by road user

  • Car occupant478 (61%)
  • Motorcyclist102 (13%)
  • Cyclist81 (10%)
  • Pedestrian67 (8.6%)
  • Van occupant20 (2.6%)
  • Bus or coach occupant19 (2.4%)
  • Goods vehicle occupant (over 3.5 tonnes)9 (1.1%)
  • Other7 (0.9%)

Vehicles involved

  • Car807 (73%)
  • Motorcycle102 (9.3%)
  • Pedal cycle85 (7.7%)
  • Van or goods vehicle up to 3.5 tonnes45 (4.1%)
  • Goods vehicle over 3.5 tonnes38 (3.4%)
  • Bus or coach9 (0.8%)
  • Other15 (1.4%)
  • Not recorded1 (0.1%)

Casualties by age

  • 0 to 512 (1.5%)
  • 6 to 1016 (2%)
  • 11 to 1561 (7.8%)
  • 16 to 20161 (21%)
  • 21 to 25103 (13%)
  • 26 to 35154 (20%)
  • 36 to 45118 (15%)
  • 46 to 5569 (8.8%)
  • 56 to 6549 (6.3%)
  • 66 to 7521 (2.7%)
  • Over 7516 (2%)
  • Not recorded3 (0.4%)

Drivers, passengers and pedestrians

  • Driver or rider516 (66%)
  • Passenger200 (26%)
  • Pedestrian67 (8.6%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A6129

Map of the 25 most recent crashes on the A6129

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

  • 25 crashes
  • Serious
  • Slight

A6129 crashes by council area

Collisions on the A6129 were recorded in 4 council areas. Welwyn Hatfield has the most, with 428, followed by St Albans (98) and Luton (35).

Collisions on the A6129 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stWelwyn Hatfield428569683
2ndSt Albans98127237
3rdLuton3547010
4thCentral Bedfordshire183404

A6129 crashes by town

Collisions on the A6129 were recorded in 4 towns and built-up areas, led by Welwyn Garden City (209) and Harpenden (16).

Recent crashes on the A6129

These are the 25 most recent collisions on the A6129, from 26 June 2018 to 13 November 2025.

Severity