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CrashStats

A21 accidents: crash map and statistics

Police recorded 18,576 collisions on the A21 from 1979 to 2025, with 24,843 casualties. Of those crashes, 329 were fatal and 3,342 serious, and 347 people were killed.

In 2025 there were 202 collisions on the A21, down 9% from 223 in 2024, with 252 casualties.

Live A21 closures, incidents and roadworks are checked every 5 minutes.

Collisions since 1979
18,576
37th highest of 4,923 roads
Casualties
24,843
1.34 per collision
Fatal collisions
329
347 people killed
Serious collisions
3,342
4,022 seriously injured
Collisions in 2025
202
Down 9% on 2024
Casualties in 2025
252
Down 9% on 2024

Crash severity on the A21

On the A21, 1.8% of collisions were fatal and 18% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal3291.8%
  • Serious3,34218%
  • Slight14,90580%

Where the A21 ranks among 4,923 roads

Most collisions
37th
Most casualties
39th
Most fatal collisions
49th
Most serious collisions
33rd

A21 accidents by year

Collisions on the A21 peaked at 590 in 1982 and were down to 202 in 2025.

Collisions and casualties on the A21, 1979 to 2025

  • Collisions
  • Collisions in 2025: 202
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
2025202252
2024223276
2023235330
2022257333
2021233301
2020221284
2019284404
2018251357
2017270362
2016319446
2015295385
2014371495
2013290393
2012336441
2011329475
2010266341
2009327466
2008287377
2007314437
2006312403
2005317410
2004383495
2003396533
2002462611
2001415545
2000426559
1999462679
1998468646
1997499669
1996469653
1995473639
1994496711
1993451591
1992492660
1991427540
1990462616
1989475627
1988490628
1987505654
1986491629
1985544736
1984560740
1983529655
1982590783
1981550744
1980564789
1979558743

When crashes happen on the A21

Friday has the most collisions on the A21 (3,049), and 3pm to 6pm is the busiest time of day (4,146).

Collisions by day of the week

  • Monday2,702 (15%)
  • Tuesday2,621 (14%)
  • Wednesday2,593 (14%)
  • Thursday2,773 (15%)
  • Friday3,049 (16%)
  • Saturday2,712 (15%)
  • Sunday2,126 (11%)

Collisions by time of day

  • Midnight to 3am619 (3.3%)
  • 3am to 6am333 (1.8%)
  • 6am to 9am2,221 (12%)
  • 9am to noon3,006 (16%)
  • Noon to 3pm3,692 (20%)
  • 3pm to 6pm4,146 (22%)
  • 6pm to 9pm2,811 (15%)
  • 9pm to midnight1,748 (9.4%)

Collisions by month

  • January1,448 (7.8%)
  • February1,335 (7.2%)
  • March1,514 (8.2%)
  • April1,452 (7.8%)
  • May1,584 (8.5%)
  • June1,529 (8.2%)
  • July1,687 (9.1%)
  • August1,518 (8.2%)
  • September1,567 (8.4%)
  • October1,692 (9.1%)
  • November1,655 (8.9%)
  • December1,595 (8.6%)

Light conditions at the time

  • Daylight13,473 (73%)
  • Dark, street lights lit3,774 (20%)
  • Dark, no street lighting1,115 (6%)
  • Dark, lighting unknown128 (0.7%)
  • Dark, street lights unlit86 (0.5%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A21 crashes

On the A21, 65% of collisions happened where the speed limit was 30 mph and 73% on a dry road surface.

Speed limit at the scene

  • 20 mph373 (2%)
  • 30 mph12,153 (65%)
  • 40 mph1,136 (6.1%)
  • 50 mph629 (3.4%)
  • 60 mph2,957 (16%)
  • 70 mph1,328 (7.1%)

Weather at the time

  • Fine, no high winds14,059 (76%)
  • Raining, no high winds2,421 (13%)
  • Raining with high winds200 (1.1%)
  • Fine with high winds170 (0.9%)
  • Other1,486 (8%)
  • Not recorded240 (1.3%)

Road surface

  • Dry13,507 (73%)
  • Wet or damp4,743 (26%)
  • Frost or ice172 (0.9%)
  • Snow70 (0.4%)
  • Other36 (0.2%)
  • Not recorded48 (0.3%)

Type of road

  • Single carriageway13,468 (73%)
  • Dual carriageway3,228 (17%)
  • One way street or slip road642 (3.5%)
  • Roundabout625 (3.4%)
  • Not recorded613 (3.3%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A21 crashes

Car occupants make up 53% of the people killed or injured on the A21, followed by pedestrians (14%).

Casualties by road user

  • Car occupant13,202 (53%)
  • Pedestrian3,436 (14%)
  • Motorcyclist3,404 (14%)
  • Bus or coach occupant2,148 (8.6%)
  • Cyclist1,503 (6%)
  • Van occupant626 (2.5%)
  • Other509 (2%)
  • Not recorded15 (0.1%)

Vehicles involved

  • Car22,614 (68%)
  • Motorcycle3,564 (11%)
  • Bus or coach2,364 (7.1%)
  • Van or goods vehicle up to 3.5 tonnes1,748 (5.2%)
  • Pedal cycle1,548 (4.6%)
  • Goods vehicle over 3.5 tonnes996 (3%)
  • Other587 (1.8%)
  • Not recorded9 (under 0.1%)

Casualties by age

  • 0 to 5421 (1.7%)
  • 6 to 10568 (2.3%)
  • 11 to 151,132 (4.6%)
  • 16 to 203,471 (14%)
  • 21 to 252,930 (12%)
  • 26 to 354,632 (19%)
  • 36 to 453,436 (14%)
  • 46 to 552,677 (11%)
  • 56 to 652,036 (8.2%)
  • 66 to 751,421 (5.7%)
  • Over 751,096 (4.4%)
  • Not recorded1,023 (4.1%)

Drivers, passengers and pedestrians

  • Driver or rider13,849 (56%)
  • Passenger7,558 (30%)
  • Pedestrian3,436 (14%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A21

Map of the 25 most recent crashes on the A21

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

  • 25 crashes
  • Serious
  • Slight

A21 crashes by council area

Collisions on the A21 were recorded in 7 council areas. Lewisham has the most, with 7,522, followed by Bromley (4,440) and Tunbridge Wells (2,147).

Collisions on the A21 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stLewisham7,5229,045541,051
2ndBromley4,4405,63267804
3rdTunbridge Wells2,1473,45475475
4thRother1,6662,83776441
5thHastings1,4491,82816275
6thSevenoaks8241,26317195
7thTonbridge and Malling5097592398

A21 crashes by town

Collisions on the A21 were recorded in 8 towns and built-up areas, led by Lewisham (6,814) and Bromley (3,353).

Recent crashes on the A21

These are the 25 most recent collisions on the A21, from 19 November to 30 December 2025.

Severity