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CrashStats

B170 accidents: crash map and statistics

Police recorded 393 collisions on the B170 from 1979 to 2025, with 535 casualties. Of those crashes, 8 were fatal and 66 serious, and 8 people were killed.

In 2025 there were 2 collisions on the B170, level with 2024, with 4 casualties.

Collisions since 1979
393
2,326th highest of 4,923 roads
Casualties
535
1.36 per collision
Fatal collisions
8
8 people killed
Serious collisions
66
77 seriously injured
Collisions in 2025
2
Level with 2024
Casualties in 2025
4
Up 33% on 2024

Crash severity on the B170

On the B170, 2% of collisions were fatal and 17% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal82%
  • Serious6617%
  • Slight31981%

Where the B170 ranks among 4,923 roads

Most collisions
2,326th
Most casualties
2,317th
Most fatal collisions
1,937th
Most serious collisions
2,569th

B170 accidents by year

Collisions on the B170 peaked at 18 in 1982 and were down to 2 in 2025.

Collisions and casualties on the B170, 1979 to 2025

  • Collisions
  • Collisions in 2025: 2
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202524
202423
202311
202211
202155
202023
201933
201834
201745
201657
201557
201434
201334
2012810
201122
2010610
200969
200857
2007914
2006919
20051019
200434
200346
20021112
200177
2000912
1999911
1998914
19971622
19961420
1995912
19941119
19931315
19921622
19911417
19901020
198989
19881719
198799
19861419
19851419
1984910
19831622
19821824
1981911
19801217
19791822

When crashes happen on the B170

Saturday has the most collisions on the B170 (68), and 3pm to 6pm is the busiest time of day (82).

Collisions by day of the week

  • Monday61 (16%)
  • Tuesday48 (12%)
  • Wednesday53 (13%)
  • Thursday52 (13%)
  • Friday59 (15%)
  • Saturday68 (17%)
  • Sunday52 (13%)

Collisions by time of day

  • Midnight to 3am17 (4.3%)
  • 3am to 6am2 (0.5%)
  • 6am to 9am49 (12%)
  • 9am to noon52 (13%)
  • Noon to 3pm56 (14%)
  • 3pm to 6pm82 (21%)
  • 6pm to 9pm80 (20%)
  • 9pm to midnight55 (14%)

Collisions by month

  • January45 (11%)
  • February29 (7.4%)
  • March35 (8.9%)
  • April24 (6.1%)
  • May29 (7.4%)
  • June28 (7.1%)
  • July42 (11%)
  • August17 (4.3%)
  • September38 (9.7%)
  • October35 (8.9%)
  • November35 (8.9%)
  • December36 (9.2%)

Light conditions at the time

  • Daylight259 (66%)
  • Dark, street lights lit128 (33%)
  • Dark, lighting unknown4 (1%)
  • Dark, no street lighting2 (0.5%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B170 crashes

On the B170, 98% of collisions happened where the speed limit was 30 mph and 64% on a dry road surface.

Speed limit at the scene

  • 30 mph386 (98%)
  • 40 mph6 (1.5%)
  • 70 mph1 (0.3%)

Weather at the time

  • Fine, no high winds269 (68%)
  • Raining, no high winds60 (15%)
  • Fine with high winds7 (1.8%)
  • Fog or mist4 (1%)
  • Other51 (13%)
  • Not recorded2 (0.5%)

Road surface

  • Dry251 (64%)
  • Wet or damp122 (31%)
  • Frost or ice12 (3.1%)
  • Snow5 (1.3%)
  • Flood over 3cm deep3 (0.8%)

Type of road

  • Single carriageway359 (91%)
  • Dual carriageway3 (0.8%)
  • Roundabout2 (0.5%)
  • One way street or slip road1 (0.3%)
  • Not recorded28 (7.1%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B170 crashes

Car occupants make up 73% of the people killed or injured on the B170, followed by pedestrians (10%).

Casualties by road user

  • Car occupant388 (73%)
  • Pedestrian54 (10%)
  • Motorcyclist43 (8%)
  • Cyclist22 (4.1%)
  • Van occupant10 (1.9%)
  • Taxi or private hire car occupant6 (1.1%)
  • Bus or coach occupant5 (0.9%)
  • Other7 (1.3%)

Vehicles involved

  • Car618 (83%)
  • Motorcycle45 (6%)
  • Van or goods vehicle up to 3.5 tonnes27 (3.6%)
  • Pedal cycle23 (3.1%)
  • Bus or coach11 (1.5%)
  • Other vehicle9 (1.2%)
  • Goods vehicle over 3.5 tonnes8 (1.1%)
  • Other8 (1.1%)

Casualties by age

  • 0 to 58 (1.5%)
  • 6 to 109 (1.7%)
  • 11 to 1528 (5.2%)
  • 16 to 20107 (20%)
  • 21 to 2566 (12%)
  • 26 to 3589 (17%)
  • 36 to 4584 (16%)
  • 46 to 5546 (8.6%)
  • 56 to 6539 (7.3%)
  • 66 to 7524 (4.5%)
  • Over 7513 (2.4%)
  • Not recorded22 (4.1%)

Drivers, passengers and pedestrians

  • Driver or rider348 (65%)
  • Passenger133 (25%)
  • Pedestrian54 (10%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B170

Map of the 25 most recent crashes on the B170

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

B170 crashes by council area

Collisions on the B170 were recorded in 2 council areas. Epping Forest has the most, with 385, followed by Redbridge (4).

Collisions on the B170 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stEpping Forest385523862
2ndRedbridge4601

B170 crashes by town

Collisions on the B170 were recorded in 2 towns and built-up areas, led by Buckhurst Hill (213) and Chigwell (33).

Recent crashes on the B170

These are the 25 most recent collisions on the B170, from 21 May 2016 to 25 August 2025.

Severity