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CrashStats

B173 accidents: crash map and statistics

Police recorded 729 collisions on the B173 from 1979 to 2025, with 969 casualties. Of those crashes, 7 were fatal and 136 serious, and 9 people were killed.

In 2025 there were 9 collisions on the B173, down 25% from 12 in 2024, with 11 casualties.

Collisions since 1979
729
1,451st highest of 4,923 roads
Casualties
969
1.33 per collision
Fatal collisions
7
9 people killed
Serious collisions
136
155 seriously injured
Collisions in 2025
9
Down 25% on 2024
Casualties in 2025
11
Down 31% on 2024

Crash severity on the B173

On the B173, 1% of collisions were fatal and 19% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal71%
  • Serious13619%
  • Slight58680%

Where the B173 ranks among 4,923 roads

Most collisions
1,451st
Most casualties
1,467th
Most fatal collisions
2,103rd
Most serious collisions
1,480th

B173 accidents by year

Collisions on the B173 peaked at 32 in 1984 and were down to 9 in 2025.

Collisions and casualties on the B173, 1979 to 2025

  • Collisions
  • Collisions in 2025: 9
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
2025911
20241216
2023913
202299
20211826
202079
201955
201899
2017810
20161012
2015712
20141112
2013812
20121213
20111523
2010812
2009710
2008816
20071022
2006910
20051316
20041217
20031416
200299
20011418
20001418
19992635
19981421
19971931
19961317
19951518
19942021
19931825
19921923
19912131
19902325
19892224
19882432
19872432
19862942
19852832
19843240
19832939
19822435
19812340
19801823
19792127

When crashes happen on the B173

Tuesday has the most collisions on the B173 (122), and 3pm to 6pm is the busiest time of day (145).

Collisions by day of the week

  • Monday92 (13%)
  • Tuesday122 (17%)
  • Wednesday103 (14%)
  • Thursday103 (14%)
  • Friday115 (16%)
  • Saturday106 (15%)
  • Sunday88 (12%)

Collisions by time of day

  • Midnight to 3am33 (4.5%)
  • 3am to 6am19 (2.6%)
  • 6am to 9am95 (13%)
  • 9am to noon110 (15%)
  • Noon to 3pm115 (16%)
  • 3pm to 6pm145 (20%)
  • 6pm to 9pm124 (17%)
  • 9pm to midnight88 (12%)

Collisions by month

  • January60 (8.2%)
  • February44 (6%)
  • March72 (9.9%)
  • April59 (8.1%)
  • May64 (8.8%)
  • June66 (9.1%)
  • July59 (8.1%)
  • August49 (6.7%)
  • September49 (6.7%)
  • October68 (9.3%)
  • November72 (9.9%)
  • December67 (9.2%)

Light conditions at the time

  • Daylight503 (69%)
  • Dark, street lights lit216 (30%)
  • Dark, lighting unknown5 (0.7%)
  • Dark, street lights unlit3 (0.4%)
  • Dark, no street lighting2 (0.3%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B173 crashes

On the B173, 98% of collisions happened where the speed limit was 30 mph and 68% on a dry road surface.

Speed limit at the scene

  • 20 mph2 (0.3%)
  • 30 mph712 (98%)
  • 40 mph11 (1.5%)
  • 60 mph4 (0.5%)

Weather at the time

  • Fine, no high winds543 (74%)
  • Raining, no high winds108 (15%)
  • Fog or mist5 (0.7%)
  • Raining with high winds5 (0.7%)
  • Other63 (8.6%)
  • Not recorded5 (0.7%)

Road surface

  • Dry495 (68%)
  • Wet or damp221 (30%)
  • Frost or ice8 (1.1%)
  • Snow2 (0.3%)
  • Flood over 3cm deep1 (0.1%)
  • Not recorded2 (0.3%)

Type of road

  • Single carriageway654 (90%)
  • Dual carriageway11 (1.5%)
  • Roundabout9 (1.2%)
  • One way street or slip road7 (1%)
  • Not recorded48 (6.6%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B173 crashes

Car occupants make up 69% of the people killed or injured on the B173, followed by motorcyclists (11%).

Casualties by road user

  • Car occupant667 (69%)
  • Motorcyclist110 (11%)
  • Pedestrian95 (9.8%)
  • Cyclist41 (4.2%)
  • Van occupant30 (3.1%)
  • Bus or coach occupant19 (2%)
  • Other vehicle occupant3 (0.3%)
  • Other4 (0.4%)

Vehicles involved

  • Car1,111 (78%)
  • Motorcycle109 (7.7%)
  • Van or goods vehicle up to 3.5 tonnes100 (7.1%)
  • Pedal cycle43 (3%)
  • Goods vehicle over 3.5 tonnes22 (1.6%)
  • Bus or coach13 (0.9%)
  • Taxi or private hire car9 (0.6%)
  • Other10 (0.7%)

Casualties by age

  • 0 to 517 (1.8%)
  • 6 to 1020 (2.1%)
  • 11 to 1542 (4.3%)
  • 16 to 20137 (14%)
  • 21 to 25128 (13%)
  • 26 to 35171 (18%)
  • 36 to 45131 (14%)
  • 46 to 55126 (13%)
  • 56 to 6579 (8.2%)
  • 66 to 7557 (5.9%)
  • Over 7526 (2.7%)
  • Not recorded35 (3.6%)

Drivers, passengers and pedestrians

  • Driver or rider628 (65%)
  • Passenger246 (25%)
  • Pedestrian95 (9.8%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B173

Map of the 25 most recent crashes on the B173

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

  • 25 crashes
  • Serious
  • Slight

B173 crashes by council area

Collisions on the B173 were recorded in 3 council areas. Epping Forest has the most, with 551, followed by Redbridge (166) and Waltham Forest (8).

Collisions on the B173 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stEpping Forest5517406104
2ndRedbridge166210129
3rdWaltham Forest81302

B173 crashes by town

Collisions on the B173 were recorded in 3 towns and built-up areas, led by Chigwell (389) and Redbridge (124).

Recent crashes on the B173

These are the 25 most recent collisions on the B173, from 29 May 2023 to 2 December 2025.

Severity