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CrashStats

Chiltern road accidents in 2021: crash map and statistics

Police recorded 77 road traffic collisions in Chiltern in 2021, and 89 people were killed or injured in them. Of those collisions, 1 was fatal and 14 were serious.

Collisions were level with 2020, and casualties fell from 96.

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 2021
77
Level with 2020
Casualties in 2021
89
Down 7% on 2020
Fatal collisions
1
1.3% of collisions
Serious collisions
14
18% of collisions

Crash severity in Chiltern in 2021

1.3% of collisions in Chiltern in 2021 were fatal and 18% serious, against 1.8% and 20% in Chiltern from 1979 to 2025.

Collisions by worst injury

  • Fatal11.3%
  • Serious1418%
  • Slight6281%

People hurt, by injury

  • Fatal11.1%
  • Serious1517%
  • Slight7382%

Chiltern road accidents by year

Collisions and casualties in Chiltern, 1979 to 2025

Collisions peaked at 400 in 1984. 2021 is highlighted, with 77, level with 2020.

  • Collisions
  • Collisions in 2021: 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 2021

Collisions by day of the week

  • Monday9 (12%)
  • Tuesday19 (25%)
  • Wednesday7 (9.1%)
  • Thursday9 (12%)
  • Friday8 (10%)
  • Saturday9 (12%)
  • Sunday16 (21%)

Collisions by time of day

  • 00:00 to 02:592 (2.6%)
  • 03:00 to 05:591 (1.3%)
  • 06:00 to 08:5910 (13%)
  • 09:00 to 11:5915 (19%)
  • 12:00 to 14:5912 (16%)
  • 15:00 to 17:5920 (26%)
  • 18:00 to 20:599 (12%)
  • 21:00 to 23:598 (10%)

Collisions by month

  • January3 (3.9%)
  • February4 (5.2%)
  • March6 (7.8%)
  • April3 (3.9%)
  • May4 (5.2%)
  • June10 (13%)
  • July9 (12%)
  • August9 (12%)
  • September4 (5.2%)
  • October9 (12%)
  • November10 (13%)
  • December6 (7.8%)

Light conditions

  • Daylight60 (78%)
  • Dark, no street lighting8 (10%)
  • Dark, street lights lit7 (9.1%)
  • Dark, street lights unlit2 (2.6%)

Weather at the time

  • Fine, no high winds64 (83%)
  • Raining, no high winds2 (2.6%)
  • Fog or mist1 (1.3%)
  • Other10 (13%)

Road surface

  • Dry60 (78%)
  • Wet or damp16 (21%)
  • Frost or ice1 (1.3%)

Speed limit at the scene

  • 30 mph55 (71%)
  • 40 mph5 (6.5%)
  • 50 mph2 (2.6%)
  • 60 mph14 (18%)
  • 70 mph1 (1.3%)

Type of road

  • Single carriageway68 (88%)
  • Roundabout6 (7.8%)
  • Dual carriageway2 (2.6%)
  • One way street or slip road1 (1.3%)

Source: Department for Transport, STATS19 road safety data

Who was hurt in road crashes in Chiltern in 2021

Casualties by road user

  • Car occupant48 (54%)
  • Pedestrian15 (17%)
  • Cyclist13 (15%)
  • Motorcyclist9 (10%)
  • Van occupant2 (2.2%)
  • Mobility scooter rider1 (1.1%)
  • Taxi or private hire car occupant1 (1.1%)

Casualties by age

  • 11 to 155 (5.6%)
  • 16 to 207 (7.9%)
  • 21 to 253 (3.4%)
  • 26 to 3515 (17%)
  • 36 to 4521 (24%)
  • 46 to 5516 (18%)
  • 56 to 6510 (11%)
  • 66 to 754 (4.5%)
  • Over 756 (6.7%)
  • Not recorded2 (2.2%)

Drivers, passengers and pedestrians

  • Driver or rider64 (72%)
  • Pedestrian15 (17%)
  • Passenger10 (11%)

Vehicles involved

  • Car100 (72%)
  • Pedal cycle13 (9.4%)
  • Motorcycle9 (6.5%)
  • Van or goods vehicle up to 3.5 tonnes7 (5.1%)
  • Mobility scooter3 (2.2%)
  • Taxi or private hire car3 (2.2%)
  • Bus or coach1 (0.7%)
  • Other vehicle1 (0.7%)
  • Personal powered transporter (e-scooter or similar)1 (0.7%)

Source: Department for Transport, STATS19 road safety data

Crash map for Chiltern in 2021

Map of the last 24 crashes of 2021 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
  • Serious
  • Slight

Accident hotspots (10)

Accident hotspots in Chiltern in 2021

Chesham South, Buckinghamshire, HP5 2HE area was the busiest accident hotspot in Chiltern in 2021, with 10 collisions, 1 of them serious.

Roads in Chiltern with the most crashes in 2021

The A416 had the most collisions in Chiltern in 2021: 14, including 1 serious.

Roads ranked by collisions in Chiltern, 2021
RankRoadCollisionsCasualtiesFatalSerious
1stA416141601
2ndA41391001
3rdA4045711
4thB4853401
5thA41542201
6thB44411101
7thB45051101
8thB4741101

Towns in Chiltern: crashes in 2021

Chesham had the most collisions of any town in Chiltern in 2021: 16.

Postcode districts in Chiltern: crashes in 2021

HP5 had the most collisions of any postcode district in Chiltern in 2021: 27.

Buckinghamshire and its former districts in 2021

Buckinghamshire recorded 637 collisions in 2021, and 12% of them were in the old Chiltern district.

Other former districts in Buckinghamshire

Latest crashes in Chiltern in 2021

Of the last 24 crashes in Chiltern in 2021, none were fatal and 4 were serious. The last was on 30 December 2021.

Severity

Chiltern road accidents in other years