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CrashStats

B1099 accidents: crash map and statistics

Police recorded 390 collisions on the B1099 from 1979 to 2025, with 498 casualties. Of those crashes, 11 were fatal and 57 serious, and 11 people were killed.

In 2025 there were 5 collisions on the B1099, up 25% from 4 in 2024, with 8 casualties.

Collisions since 1979
390
2,335th highest of 4,923 roads
Casualties
498
1.28 per collision
Fatal collisions
11
11 people killed
Serious collisions
57
66 seriously injured
Collisions in 2025
5
Up 25% on 2024
Casualties in 2025
8
Up 60% on 2024

Crash severity on the B1099

On the B1099, 2.8% of collisions were fatal and 15% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal112.8%
  • Serious5715%
  • Slight32283%

Where the B1099 ranks among 4,923 roads

Most collisions
2,335th
Most casualties
2,422nd
Most fatal collisions
1,595th
Most serious collisions
2,775th

B1099 accidents by year

Collisions on the B1099 peaked at 19 in 1982 and were down to 5 in 2025.

Collisions and casualties on the B1099, 1979 to 2025

  • Collisions
  • Collisions in 2025
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202558
202445
202357
202268
202156
202047
201922
201867
201711
201622
201579
201489
201311
20121013
201169
20101015
2009910
2008911
2007711
20061013
200578
20041115
20031227
2002911
200177
2000911
1999811
1998810
19971113
19961316
19951015
1994810
1993912
19921115
19911114
19901011
198988
19881010
19871212
19861619
19851315
198488
19831216
19821926
198155
198056
19791113

When crashes happen on the B1099

Friday has the most collisions on the B1099 (70), and 3pm to 6pm is the busiest time of day (96).

Collisions by day of the week

  • Monday53 (14%)
  • Tuesday48 (12%)
  • Wednesday66 (17%)
  • Thursday47 (12%)
  • Friday70 (18%)
  • Saturday53 (14%)
  • Sunday53 (14%)

Collisions by time of day

  • Midnight to 3am11 (2.8%)
  • 3am to 6am8 (2.1%)
  • 6am to 9am44 (11%)
  • 9am to noon60 (15%)
  • Noon to 3pm64 (16%)
  • 3pm to 6pm96 (25%)
  • 6pm to 9pm74 (19%)
  • 9pm to midnight33 (8.5%)

Collisions by month

  • January30 (7.7%)
  • February30 (7.7%)
  • March36 (9.2%)
  • April35 (9%)
  • May29 (7.4%)
  • June35 (9%)
  • July29 (7.4%)
  • August19 (4.9%)
  • September26 (6.7%)
  • October35 (9%)
  • November42 (11%)
  • December44 (11%)

Light conditions at the time

  • Daylight266 (68%)
  • Dark, street lights lit91 (23%)
  • Dark, no street lighting27 (6.9%)
  • Dark, lighting unknown4 (1%)
  • Dark, street lights unlit2 (0.5%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B1099 crashes

On the B1099, 72% of collisions happened where the speed limit was 30 mph and 64% on a dry road surface.

Speed limit at the scene

  • 30 mph282 (72%)
  • 40 mph48 (12%)
  • 60 mph60 (15%)

Weather at the time

  • Fine, no high winds285 (73%)
  • Raining, no high winds46 (12%)
  • Raining with high winds14 (3.6%)
  • Fine with high winds13 (3.3%)
  • Other20 (5.1%)
  • Not recorded12 (3.1%)

Road surface

  • Dry249 (64%)
  • Wet or damp125 (32%)
  • Frost or ice9 (2.3%)
  • Snow5 (1.3%)
  • Not recorded2 (0.5%)

Type of road

  • Single carriageway378 (97%)
  • One way street or slip road4 (1%)
  • Roundabout4 (1%)
  • Dual carriageway3 (0.8%)
  • Not recorded1 (0.3%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B1099 crashes

Car occupants make up 53% of the people killed or injured on the B1099, followed by cyclists (18%).

Casualties by road user

  • Car occupant264 (53%)
  • Cyclist91 (18%)
  • Pedestrian59 (12%)
  • Motorcyclist58 (12%)
  • Van occupant18 (3.6%)
  • Goods vehicle occupant (over 3.5 tonnes)3 (0.6%)
  • Bus or coach occupant2 (0.4%)
  • Other3 (0.6%)

Vehicles involved

  • Car487 (70%)
  • Pedal cycle90 (13%)
  • Motorcycle65 (9.4%)
  • Van or goods vehicle up to 3.5 tonnes30 (4.3%)
  • Goods vehicle over 3.5 tonnes9 (1.3%)
  • Other vehicle4 (0.6%)
  • Bus or coach3 (0.4%)
  • Other7 (1%)

Casualties by age

  • 0 to 512 (2.4%)
  • 6 to 1026 (5.2%)
  • 11 to 1532 (6.4%)
  • 16 to 2087 (17%)
  • 21 to 2559 (12%)
  • 26 to 3585 (17%)
  • 36 to 4544 (8.8%)
  • 46 to 5558 (12%)
  • 56 to 6537 (7.4%)
  • 66 to 7531 (6.2%)
  • Over 7522 (4.4%)
  • Not recorded5 (1%)

Drivers, passengers and pedestrians

  • Driver or rider336 (67%)
  • Passenger103 (21%)
  • Pedestrian59 (12%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B1099

Map of the 25 most recent crashes on the B1099

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

B1099 crashes by council area

Collisions on the B1099 were recorded in 2 council areas. Fenland has the most, with 385, followed by Chelmsford (3).

Collisions on the B1099 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stFenland3854921157
2ndChelmsford3400

B1099 crashes by town

Collisions on the B1099 were recorded in 2 towns and built-up areas, led by March (310) and Chelmsford (3).

Recent crashes on the B1099

These are the 25 most recent collisions on the B1099, from 13 January 2021 to 6 November 2025.

Severity