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CrashStats

South Bucks road accidents in 2020: crash map and statistics

Police recorded 122 road traffic collisions in South Bucks in 2020, and 152 people were killed or injured in them. Of those collisions, 3 were fatal and 25 were serious.

Collisions were down 30% on 2019 (175), and casualties fell from 240.

Across all years from 1979 to 2025, police recorded 15,877 collisions in South Bucks.

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

Collisions in 2020
122
Down 30% on 2019
Casualties in 2020
152
Down 37% on 2019
Fatal collisions
3
2.5% of collisions
Serious collisions
25
20% of collisions

Crash severity in South Bucks in 2020

2.5% of collisions in South Bucks in 2020 were fatal and 20% serious, against 2.1% and 17% in South Bucks from 1979 to 2025.

Collisions by worst injury

  • Fatal32.5%
  • Serious2520%
  • Slight9477%

People hurt, by injury

  • Fatal32%
  • Serious3020%
  • Slight11978%

South Bucks road accidents by year

Collisions and casualties in South Bucks, 1979 to 2025

Collisions peaked at 492 in 1997. 2020 is highlighted, with 122, down 30% on 2019.

  • Collisions
  • Collisions in 2020: 122
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
2025157208
2024114144
2023106132
2022148197
2021151200
2020122152
2019175240
2018201271
2017177244
2016215292
2015228312
2014249352
2013271377
2012286425
2011309431
2010318452
2009308440
2008355500
2007375669
2006411587
2005390572
2004392565
2003407549
2002425610
2001444642
2000489697
1999490707
1998458647
1997492704
1996457654
1995370497
1994459645
1993437624
1992416594
1991425604
1990416593
1989463670
1988443621
1987408631
1986379555
1985403578
1984425557
1983385521
1982354483
1981353484
1980246315
1979375519

When and where crashes happen in South Bucks in 2020

Collisions by day of the week

  • Monday18 (15%)
  • Tuesday20 (16%)
  • Wednesday14 (11%)
  • Thursday16 (13%)
  • Friday27 (22%)
  • Saturday16 (13%)
  • Sunday11 (9%)

Collisions by time of day

  • 00:00 to 02:594 (3.3%)
  • 03:00 to 05:593 (2.5%)
  • 06:00 to 08:5915 (12%)
  • 09:00 to 11:5918 (15%)
  • 12:00 to 14:5923 (19%)
  • 15:00 to 17:5926 (21%)
  • 18:00 to 20:5919 (16%)
  • 21:00 to 23:5914 (11%)

Collisions by month

  • January11 (9%)
  • February12 (9.8%)
  • March5 (4.1%)
  • April8 (6.6%)
  • May8 (6.6%)
  • June9 (7.4%)
  • July14 (11%)
  • August12 (9.8%)
  • September9 (7.4%)
  • October17 (14%)
  • November10 (8.2%)
  • December7 (5.7%)

Light conditions

  • Daylight82 (67%)
  • Dark, street lights lit29 (24%)
  • Dark, no street lighting9 (7.4%)
  • Dark, lighting unknown1 (0.8%)
  • Dark, street lights unlit1 (0.8%)

Weather at the time

  • Fine, no high winds98 (80%)
  • Raining, no high winds12 (9.8%)
  • Raining with high winds3 (2.5%)
  • Other9 (7.4%)

Road surface

  • Dry89 (73%)
  • Wet or damp32 (26%)
  • Frost or ice1 (0.8%)

Speed limit at the scene

  • 30 mph45 (37%)
  • 40 mph24 (20%)
  • 50 mph7 (5.7%)
  • 60 mph9 (7.4%)
  • 70 mph37 (30%)

Type of road

  • Single carriageway62 (51%)
  • Dual carriageway38 (31%)
  • Roundabout19 (16%)
  • One way street or slip road3 (2.5%)

Source: Department for Transport, STATS19 road safety data

Who was hurt in road crashes in South Bucks in 2020

Casualties by road user

  • Car occupant100 (66%)
  • Cyclist19 (13%)
  • Motorcyclist15 (9.9%)
  • Pedestrian8 (5.3%)
  • Van occupant6 (3.9%)
  • Taxi or private hire car occupant3 (2%)
  • E-scooter or powered transporter user1 (0.7%)

Casualties by age

  • 0 to 52 (1.3%)
  • 6 to 101 (0.7%)
  • 11 to 151 (0.7%)
  • 16 to 2014 (9.2%)
  • 21 to 2526 (17%)
  • 26 to 3538 (25%)
  • 36 to 4521 (14%)
  • 46 to 5517 (11%)
  • 56 to 6517 (11%)
  • 66 to 753 (2%)
  • Over 759 (5.9%)
  • Not recorded3 (2%)

Drivers, passengers and pedestrians

  • Driver or rider118 (78%)
  • Passenger26 (17%)
  • Pedestrian8 (5.3%)

Vehicles involved

  • Car183 (75%)
  • Pedal cycle20 (8.2%)
  • Motorcycle16 (6.6%)
  • Van or goods vehicle up to 3.5 tonnes11 (4.5%)
  • Goods vehicle over 3.5 tonnes8 (3.3%)
  • Goods vehicle, weight unknown3 (1.2%)
  • Taxi or private hire car2 (0.8%)

Source: Department for Transport, STATS19 road safety data

Crash map for South Bucks in 2020

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

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 South Bucks in 2020

Iver, Buckinghamshire, SL0 0NY area was the busiest accident hotspot in South Bucks in 2020, with 10 collisions, 2 of them fatal.

Roads in South Bucks with the most crashes in 2020

The A40 had the most collisions in South Bucks in 2020: 20, including 4 serious.

Roads ranked by collisions in South Bucks, 2020
RankRoadCollisionsCasualtiesFatalSerious
1stA40202504
2ndM25151825
3rdM40141705
4thA412101012
5thA35591000
6thA461002
7thB4165700
8thB30263301
9thB4743301
10thA40072200
11thA4132401
12thB4702300
13thA40201100
14thM41100

Towns in South Bucks: crashes in 2020

Slough had the most collisions of any town in South Bucks in 2020: 9.

Postcode districts in South Bucks: crashes in 2020

SL2 had the most collisions of any postcode district in South Bucks in 2020: 22.

Buckinghamshire and its former districts in 2020

Buckinghamshire recorded 599 collisions in 2020, and 20% of them were in the old South Bucks district.

Other former districts in Buckinghamshire

Latest crashes in South Bucks in 2020

Of the last 24 crashes in South Bucks in 2020, 1 was fatal and 3 were serious. The last was on 31 December 2020.

Severity

South Bucks road accidents in other years