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CrashStats

Chiltern road accidents in 2020: crash map and statistics

Police recorded 77 road traffic collisions in Chiltern in 2020, and 96 people were killed or injured in them. Of those collisions, 3 were fatal and 16 were serious.

Collisions were down 27% on 2019 (106), and casualties fell from 134.

Across all years from 1979 to 2025, police recorded 10,784 collisions in Chiltern.

District council until April 2020, now part of Buckinghamshire. Figures follow the old district boundary.

Collisions in 2020
77
Down 27% on 2019
Casualties in 2020
96
Down 28% on 2019
Fatal collisions
3
3.9% of collisions
Serious collisions
16
21% of collisions

Crash severity in Chiltern in 2020

3.9% of collisions in Chiltern in 2020 were fatal and 21% serious, against 1.8% and 20% in Chiltern from 1979 to 2025.

Collisions by worst injury

  • Fatal33.9%
  • Serious1621%
  • Slight5875%

People hurt, by injury

  • Fatal33.1%
  • Serious2526%
  • Slight6871%

Chiltern road accidents by year

Collisions and casualties in Chiltern, 1979 to 2025

Collisions peaked at 400 in 1984. 2020 is highlighted, with 77, down 27% on 2019.

  • Collisions
  • Collisions in 2020: 77
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20257481
20247392
20238397
202284105
20217789
20207796
2019106134
2018113152
2017112144
2016119161
2015120156
2014139188
2013137199
2012159213
2011144189
2010159239
2009200278
2008190259
2007206273
2006240348
2005251362
2004245334
2003242315
2002256347
2001286392
2000298425
1999295392
1998314433
1997306409
1996303401
1995262380
1994284383
1993296409
1992319417
1991262365
1990304428
1989318431
1988354486
1987303397
1986359476
1985350502
1984400524
1983331430
1982363471
1981351476
1980195248
1979325443

When and where crashes happen in Chiltern in 2020

Collisions by day of the week

  • Monday10 (13%)
  • Tuesday12 (16%)
  • Wednesday7 (9.1%)
  • Thursday6 (7.8%)
  • Friday14 (18%)
  • Saturday17 (22%)
  • Sunday11 (14%)

Collisions by time of day

  • 00:00 to 02:593 (3.9%)
  • 03:00 to 05:593 (3.9%)
  • 06:00 to 08:5914 (18%)
  • 09:00 to 11:5911 (14%)
  • 12:00 to 14:5911 (14%)
  • 15:00 to 17:5922 (29%)
  • 18:00 to 20:5911 (14%)
  • 21:00 to 23:592 (2.6%)

Collisions by month

  • January2 (2.6%)
  • February11 (14%)
  • March6 (7.8%)
  • April4 (5.2%)
  • May6 (7.8%)
  • June6 (7.8%)
  • July6 (7.8%)
  • August5 (6.5%)
  • September10 (13%)
  • October10 (13%)
  • November6 (7.8%)
  • December5 (6.5%)

Light conditions

  • Daylight54 (70%)
  • Dark, street lights lit15 (19%)
  • Dark, no street lighting7 (9.1%)
  • Dark, lighting unknown1 (1.3%)

Weather at the time

  • Fine, no high winds66 (86%)
  • Raining with high winds4 (5.2%)
  • Raining, no high winds3 (3.9%)
  • Fine with high winds1 (1.3%)
  • Other2 (2.6%)
  • Not recorded1 (1.3%)

Road surface

  • Dry46 (60%)
  • Wet or damp30 (39%)
  • Flood over 3cm deep1 (1.3%)

Speed limit at the scene

  • 30 mph51 (66%)
  • 40 mph3 (3.9%)
  • 50 mph4 (5.2%)
  • 60 mph14 (18%)
  • 70 mph5 (6.5%)

Type of road

  • Single carriageway62 (81%)
  • Roundabout9 (12%)
  • Dual carriageway6 (7.8%)

Source: Department for Transport, STATS19 road safety data

Who was hurt in road crashes in Chiltern in 2020

Casualties by road user

  • Car occupant52 (54%)
  • Cyclist25 (26%)
  • Pedestrian11 (11%)
  • Motorcyclist6 (6.3%)
  • Van occupant2 (2.1%)

Casualties by age

  • 0 to 51 (1%)
  • 11 to 155 (5.2%)
  • 16 to 2014 (15%)
  • 21 to 2511 (11%)
  • 26 to 3517 (18%)
  • 36 to 4516 (17%)
  • 46 to 559 (9.4%)
  • 56 to 6512 (13%)
  • 66 to 756 (6.3%)
  • Over 755 (5.2%)

Drivers, passengers and pedestrians

  • Driver or rider70 (73%)
  • Passenger15 (16%)
  • Pedestrian11 (11%)

Vehicles involved

  • Car90 (66%)
  • Pedal cycle26 (19%)
  • Motorcycle6 (4.4%)
  • Van or goods vehicle up to 3.5 tonnes6 (4.4%)
  • Goods vehicle, weight unknown2 (1.5%)
  • Other vehicle2 (1.5%)
  • Taxi or private hire car2 (1.5%)
  • Agricultural vehicle1 (0.7%)
  • Bus or coach1 (0.7%)
  • Goods vehicle over 3.5 tonnes1 (0.7%)

Source: Department for Transport, STATS19 road safety data

Crash map for Chiltern in 2020

Map of the last 24 crashes of 2020 and the 10 busiest accident hotspots in Chiltern

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

  • 24 crashes
  • Fatal
  • Serious
  • Slight

Accident hotspots (10)

Accident hotspots in Chiltern in 2020

Chesham South, Buckinghamshire, HP5 2HE area was the busiest accident hotspot in Chiltern in 2020, with 11 collisions, 2 of them serious.

Roads in Chiltern with the most crashes in 2020

The A413 and A416 had the most collisions in Chiltern in 2020, with 9 each.

Roads ranked by collisions in Chiltern, 2020
RankRoadCollisionsCasualtiesFatalSerious
1stA41391511
2ndA41691002
3rdA40481211
4thM255501
5thA3552200
6thA41282200
7thB44422302
8thB45052200
9thB4742200
10thB4852201
11thA41541401
12thB44411100

Towns in Chiltern: crashes in 2020

Chesham had the most collisions of any town in Chiltern in 2020: 12.

Postcode districts in Chiltern: crashes in 2020

HP5 had the most collisions of any postcode district in Chiltern in 2020: 17.

Buckinghamshire and its former districts in 2020

Buckinghamshire recorded 599 collisions in 2020, and 13% of them were in the old Chiltern district.

Other former districts in Buckinghamshire

Latest crashes in Chiltern in 2020

Of the last 24 crashes in Chiltern in 2020, 3 were fatal and 4 were serious. The last was on 30 December 2020.

Severity

Chiltern road accidents in other years