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CrashStats

B255 accidents: crash map and statistics

Police recorded 586 collisions on the B255 from 1979 to 2025, with 892 casualties. Of those crashes, 4 were fatal and 63 serious, and 4 people were killed.

In 2025 there were 12 collisions on the B255, down 25% from 16 in 2024, with 23 casualties.

Collisions since 1979
586
1,722nd highest of 4,923 roads
Casualties
892
1.52 per collision
Fatal collisions
4
4 people killed
Serious collisions
63
74 seriously injured
Collisions in 2025
12
Down 25% on 2024
Casualties in 2025
23
Up 5% on 2024

Crash severity on the B255

On the B255, 0.7% of collisions were fatal and 11% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal40.7%
  • Serious6311%
  • Slight51989%

Where the B255 ranks among 4,923 roads

Most collisions
1,722nd
Most casualties
1,570th
Most fatal collisions
2,815th
Most serious collisions
2,629th

B255 accidents by year

Collisions on the B255 peaked at 46 in 2001 and were down to 12 in 2025.

Collisions and casualties on the B255, 1979 to 2025

  • Collisions
  • Collisions in 2025
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20251223
20241622
20231623
20221220
202157
2020913
2019812
20181726
20171016
201668
20151417
20141621
20131519
20121827
20112038
20101532
20091216
20081526
20072433
20061622
20051422
20042128
20031013
20021831
20014671
20002446
19992842
19981115
19971216
199678
1995814
1994711
1993911
19921015
19911115
19901117
19891217
198846
198758
198667
1985918
198434
198356
198258
198149
198057
197956

When crashes happen on the B255

Saturday has the most collisions on the B255 (116), and 9am to noon is the busiest time of day (124).

Collisions by day of the week

  • Monday80 (14%)
  • Tuesday62 (11%)
  • Wednesday86 (15%)
  • Thursday71 (12%)
  • Friday83 (14%)
  • Saturday116 (20%)
  • Sunday88 (15%)

Collisions by time of day

  • Midnight to 3am16 (2.7%)
  • 3am to 6am16 (2.7%)
  • 6am to 9am68 (12%)
  • 9am to noon124 (21%)
  • Noon to 3pm118 (20%)
  • 3pm to 6pm104 (18%)
  • 6pm to 9pm94 (16%)
  • 9pm to midnight46 (7.8%)

Collisions by month

  • January51 (8.7%)
  • February36 (6.1%)
  • March41 (7%)
  • April46 (7.8%)
  • May37 (6.3%)
  • June42 (7.2%)
  • July42 (7.2%)
  • August50 (8.5%)
  • September40 (6.8%)
  • October48 (8.2%)
  • November68 (12%)
  • December85 (15%)

Light conditions at the time

  • Daylight421 (72%)
  • Dark, street lights lit106 (18%)
  • Dark, no street lighting39 (6.7%)
  • Dark, street lights unlit12 (2%)
  • Dark, lighting unknown8 (1.4%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B255 crashes

On the B255, 32% of collisions happened where the speed limit was 30 mph and 67% on a dry road surface.

Speed limit at the scene

  • 20 mph2 (0.3%)
  • 30 mph187 (32%)
  • 40 mph104 (18%)
  • 50 mph142 (24%)
  • 60 mph132 (23%)
  • 70 mph19 (3.2%)

Weather at the time

  • Fine, no high winds444 (76%)
  • Raining, no high winds88 (15%)
  • Raining with high winds6 (1%)
  • Fine with high winds5 (0.9%)
  • Other26 (4.4%)
  • Not recorded17 (2.9%)

Road surface

  • Dry393 (67%)
  • Wet or damp174 (30%)
  • Frost or ice16 (2.7%)
  • Flood over 3cm deep3 (0.5%)

Type of road

  • Single carriageway282 (48%)
  • Dual carriageway205 (35%)
  • Roundabout72 (12%)
  • One way street or slip road23 (3.9%)
  • Not recorded4 (0.7%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B255 crashes

Car occupants make up 82% of the people killed or injured on the B255, followed by motorcyclists (8.4%).

Casualties by road user

  • Car occupant735 (82%)
  • Motorcyclist75 (8.4%)
  • Pedestrian26 (2.9%)
  • Cyclist22 (2.5%)
  • Van occupant12 (1.3%)
  • Bus or coach occupant9 (1%)
  • Other12 (1.3%)
  • Not recorded1 (0.1%)

Vehicles involved

  • Car1,050 (85%)
  • Motorcycle76 (6.1%)
  • Van or goods vehicle up to 3.5 tonnes39 (3.1%)
  • Goods vehicle over 3.5 tonnes32 (2.6%)
  • Pedal cycle24 (1.9%)
  • Bus or coach8 (0.6%)
  • Other9 (0.7%)
  • Not recorded4 (0.3%)

Casualties by age

  • 0 to 520 (2.2%)
  • 6 to 1026 (2.9%)
  • 11 to 1531 (3.5%)
  • 16 to 20168 (19%)
  • 21 to 25115 (13%)
  • 26 to 35206 (23%)
  • 36 to 45126 (14%)
  • 46 to 5589 (10%)
  • 56 to 6549 (5.5%)
  • 66 to 7531 (3.5%)
  • Over 7516 (1.8%)
  • Not recorded15 (1.7%)

Drivers, passengers and pedestrians

  • Driver or rider540 (61%)
  • Passenger326 (37%)
  • Pedestrian26 (2.9%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B255

Map of the 25 most recent crashes on the B255

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

  • 25 crashes
  • Serious
  • Slight

B255 crashes by council area

Of the 586 collisions on the B255, 581 were in Dartford.

Collisions on the B255 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stDartford581885460

B255 crashes by town

Collisions on the B255 were recorded in 2 towns and built-up areas, led by Swanscombe (44) and Longfield, New Ash Green and Hartley (5).

Recent crashes on the B255

These are the 25 most recent collisions on the B255, from 20 April 2024 to 23 December 2025.

Severity