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CrashStats

B172 accidents: crash map and statistics

Police recorded 485 collisions on the B172 from 1979 to 2025, with 670 casualties. Of those crashes, 17 were fatal and 112 serious, and 19 people were killed.

In 2025 there were 9 collisions on the B172, up 29% from 7 in 2024, with 11 casualties.

Collisions since 1979
485
2,023rd highest of 4,923 roads
Casualties
670
1.38 per collision
Fatal collisions
17
19 people killed
Serious collisions
112
134 seriously injured
Collisions in 2025
9
Up 29% on 2024
Casualties in 2025
11
Up 57% on 2024

Crash severity on the B172

On the B172, 3.5% of collisions were fatal and 23% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal173.5%
  • Serious11223%
  • Slight35673%

Where the B172 ranks among 4,923 roads

Most collisions
2,023rd
Most casualties
1,982nd
Most fatal collisions
1,125th
Most serious collisions
1,728th

B172 accidents by year

Collisions on the B172 peaked at 22 in 1989 and were down to 9 in 2025.

Collisions and casualties on the B172, 1979 to 2025

  • Collisions
  • Collisions in 2025: 9
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
2025911
202477
202333
2022910
202144
202033
2019710
201855
20171421
20161118
201556
201477
201389
201246
201156
20101214
2009810
200855
200769
20061019
20051116
20041012
20031518
20021217
20011119
2000912
19991316
19982132
19971422
19961418
19951417
19941422
19931623
19921114
199189
19901012
19892233
19881317
19871522
1986811
198578
19841115
19831217
19821122
19811626
19801523
19791014

When crashes happen on the B172

Friday has the most collisions on the B172 (80), and 3pm to 6pm is the busiest time of day (102).

Collisions by day of the week

  • Monday53 (11%)
  • Tuesday65 (13%)
  • Wednesday72 (15%)
  • Thursday61 (13%)
  • Friday80 (16%)
  • Saturday78 (16%)
  • Sunday76 (16%)

Collisions by time of day

  • Midnight to 3am27 (5.6%)
  • 3am to 6am10 (2.1%)
  • 6am to 9am53 (11%)
  • 9am to noon73 (15%)
  • Noon to 3pm90 (19%)
  • 3pm to 6pm102 (21%)
  • 6pm to 9pm79 (16%)
  • 9pm to midnight51 (11%)

Collisions by month

  • January35 (7.2%)
  • February35 (7.2%)
  • March46 (9.5%)
  • April44 (9.1%)
  • May43 (8.9%)
  • June41 (8.5%)
  • July43 (8.9%)
  • August33 (6.8%)
  • September40 (8.2%)
  • October46 (9.5%)
  • November42 (8.7%)
  • December37 (7.6%)

Light conditions at the time

  • Daylight343 (71%)
  • Dark, no street lighting121 (25%)
  • Dark, street lights lit12 (2.5%)
  • Dark, lighting unknown6 (1.2%)
  • Dark, street lights unlit3 (0.6%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B172 crashes

On the B172, 49% of collisions happened where the speed limit was 60 mph and 64% on a dry road surface.

Speed limit at the scene

  • 20 mph1 (0.2%)
  • 30 mph216 (45%)
  • 40 mph19 (3.9%)
  • 50 mph5 (1%)
  • 60 mph238 (49%)
  • 70 mph6 (1.2%)

Weather at the time

  • Fine, no high winds403 (83%)
  • Raining, no high winds43 (8.9%)
  • Fine with high winds8 (1.6%)
  • Fog or mist7 (1.4%)
  • Other23 (4.7%)
  • Not recorded1 (0.2%)

Road surface

  • Dry309 (64%)
  • Wet or damp145 (30%)
  • Frost or ice24 (4.9%)
  • Flood over 3cm deep5 (1%)
  • Oil or diesel1 (0.2%)
  • Snow1 (0.2%)

Type of road

  • Single carriageway475 (98%)
  • Dual carriageway5 (1%)
  • Roundabout3 (0.6%)
  • 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 B172 crashes

Car occupants make up 64% of the people killed or injured on the B172, followed by motorcyclists (17%).

Casualties by road user

  • Car occupant429 (64%)
  • Motorcyclist111 (17%)
  • Cyclist55 (8.2%)
  • Pedestrian37 (5.5%)
  • Van occupant23 (3.4%)
  • Goods vehicle occupant (over 3.5 tonnes)6 (0.9%)
  • Other8 (1.2%)
  • Not recorded1 (0.1%)

Vehicles involved

  • Car652 (71%)
  • Motorcycle117 (13%)
  • Pedal cycle58 (6.3%)
  • Van or goods vehicle up to 3.5 tonnes38 (4.2%)
  • Goods vehicle over 3.5 tonnes27 (3%)
  • Other vehicle10 (1.1%)
  • Bus or coach4 (0.4%)
  • Other8 (0.9%)

Casualties by age

  • 0 to 57 (1%)
  • 6 to 108 (1.2%)
  • 11 to 1536 (5.4%)
  • 16 to 20140 (21%)
  • 21 to 2595 (14%)
  • 26 to 35126 (19%)
  • 36 to 4591 (14%)
  • 46 to 5570 (10%)
  • 56 to 6546 (6.9%)
  • 66 to 7526 (3.9%)
  • Over 7516 (2.4%)
  • Not recorded9 (1.3%)

Drivers, passengers and pedestrians

  • Driver or rider459 (69%)
  • Passenger174 (26%)
  • Pedestrian37 (5.5%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B172

Map of the 25 most recent crashes on the B172

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

B172 crashes by council area

Of the 485 collisions on the B172, 478 were in Epping Forest.

Collisions on the B172 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stEpping Forest47865917111

B172 crashes by town

Of the 485 collisions on the B172, 206 were in the built-up area of Theydon Bois.

Recent crashes on the B172

These are the 25 most recent collisions on the B172, from 28 May 2022 to 21 July 2025.

Severity