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CrashStats

B1004 accidents: crash map and statistics

Police recorded 710 collisions on the B1004 from 1979 to 2025, with 964 casualties. Of those crashes, 12 were fatal and 159 serious, and 13 people were killed.

In 2025 there were 8 collisions on the B1004, up 14% from 7 in 2024, with 11 casualties.

Collisions since 1979
710
1,489th highest of 4,923 roads
Casualties
964
1.36 per collision
Fatal collisions
12
13 people killed
Serious collisions
159
185 seriously injured
Collisions in 2025
8
Up 14% on 2024
Casualties in 2025
11
Down 8% on 2024

Crash severity on the B1004

On the B1004, 1.7% of collisions were fatal and 22% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal121.7%
  • Serious15922%
  • Slight53976%

Where the B1004 ranks among 4,923 roads

Most collisions
1,489th
Most casualties
1,479th
Most fatal collisions
1,505th
Most serious collisions
1,305th

B1004 accidents by year

Collisions on the B1004 peaked at 31 in 1997 and were down to 8 in 2025.

Collisions and casualties on the B1004, 1979 to 2025

  • Collisions
  • Collisions in 2025: 8
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
2025811
2024712
20231115
2022914
202158
2020911
20191213
201846
20171318
2016913
20151419
2014911
201388
2012712
20111012
2010910
20091015
20081316
20071014
20061014
20052230
20041419
20031825
20021926
20012847
20001417
19992428
19981823
19973139
19961219
19951922
19942034
19931720
19922125
19911924
19902136
19891924
19881929
19871823
19862526
19851319
19842332
19831622
19822128
19811929
19801625
19791721

When crashes happen on the B1004

Friday has the most collisions on the B1004 (117), and 3pm to 6pm is the busiest time of day (178).

Collisions by day of the week

  • Monday107 (15%)
  • Tuesday112 (16%)
  • Wednesday99 (14%)
  • Thursday102 (14%)
  • Friday117 (16%)
  • Saturday100 (14%)
  • Sunday73 (10%)

Collisions by time of day

  • Midnight to 3am33 (4.6%)
  • 3am to 6am9 (1.3%)
  • 6am to 9am116 (16%)
  • 9am to noon103 (15%)
  • Noon to 3pm104 (15%)
  • 3pm to 6pm178 (25%)
  • 6pm to 9pm102 (14%)
  • 9pm to midnight65 (9.2%)

Collisions by month

  • January57 (8%)
  • February41 (5.8%)
  • March42 (5.9%)
  • April61 (8.6%)
  • May69 (9.7%)
  • June58 (8.2%)
  • July76 (11%)
  • August53 (7.5%)
  • September53 (7.5%)
  • October65 (9.2%)
  • November75 (11%)
  • December60 (8.5%)

Light conditions at the time

  • Daylight526 (74%)
  • Dark, no street lighting92 (13%)
  • Dark, street lights lit80 (11%)
  • Dark, lighting unknown6 (0.8%)
  • Dark, street lights unlit6 (0.8%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B1004 crashes

On the B1004, 49% of collisions happened where the speed limit was 30 mph and 59% on a dry road surface.

Speed limit at the scene

  • 30 mph351 (49%)
  • 40 mph23 (3.2%)
  • 50 mph2 (0.3%)
  • 60 mph328 (46%)
  • 70 mph6 (0.8%)

Weather at the time

  • Fine, no high winds565 (80%)
  • Raining, no high winds97 (14%)
  • Raining with high winds13 (1.8%)
  • Fine with high winds6 (0.8%)
  • Other21 (3%)
  • Not recorded8 (1.1%)

Road surface

  • Dry421 (59%)
  • Wet or damp261 (37%)
  • Frost or ice19 (2.7%)
  • Snow6 (0.8%)
  • Flood over 3cm deep2 (0.3%)
  • Not recorded1 (0.1%)

Type of road

  • Single carriageway685 (96%)
  • Roundabout19 (2.7%)
  • One way street or slip road4 (0.6%)
  • Not recorded2 (0.3%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B1004 crashes

Car occupants make up 67% of the people killed or injured on the B1004, followed by motorcyclists (13%).

Casualties by road user

  • Car occupant648 (67%)
  • Motorcyclist127 (13%)
  • Pedestrian87 (9%)
  • Cyclist52 (5.4%)
  • Van occupant21 (2.2%)
  • Bus or coach occupant11 (1.1%)
  • Goods vehicle occupant (over 3.5 tonnes)10 (1%)
  • Other8 (0.8%)

Vehicles involved

  • Car986 (76%)
  • Motorcycle133 (10%)
  • Pedal cycle53 (4.1%)
  • Van or goods vehicle up to 3.5 tonnes50 (3.9%)
  • Goods vehicle over 3.5 tonnes27 (2.1%)
  • Other vehicle16 (1.2%)
  • Other25 (1.9%)
  • Not recorded1 (0.1%)

Casualties by age

  • 0 to 511 (1.1%)
  • 6 to 1023 (2.4%)
  • 11 to 1546 (4.8%)
  • 16 to 20231 (24%)
  • 21 to 25133 (14%)
  • 26 to 35174 (18%)
  • 36 to 45153 (16%)
  • 46 to 5583 (8.6%)
  • 56 to 6551 (5.3%)
  • 66 to 7528 (2.9%)
  • Over 7529 (3%)
  • Not recorded2 (0.2%)

Drivers, passengers and pedestrians

  • Driver or rider666 (69%)
  • Passenger211 (22%)
  • Pedestrian87 (9%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B1004

Map of the 25 most recent crashes on the B1004

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

  • 25 crashes
  • Serious
  • Slight

B1004 crashes by council area

Collisions on the B1004 were recorded in 2 council areas. East Hertfordshire has the most, with 699, followed by Uttlesford (5).

Collisions on the B1004 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stEast Hertfordshire69995112158
2ndUttlesford5601

B1004 crashes by town

Collisions on the B1004 were recorded in 2 towns and built-up areas, led by Bishop's Stortford (194) and Ware (88).

Recent crashes on the B1004

These are the 25 most recent collisions on the B1004, from 15 February 2023 to 27 December 2025.

Severity