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CrashStats

SL3 road accidents: crash map and statistics

Police recorded 8,319 road traffic collisions in the SL3 postcode district, Slough, from 1979 to 2025, and 11,163 people were killed or injured in them. Of those collisions, 157 were fatal and 1,199 were serious.

In 2025 police recorded 103 collisions, up 29% on 2024 (80).

Collisions since 1979
8,319
105th highest of 2,813 postcode districts
Casualties
11,163
1.34 per collision
Fatal collisions
157
165 people killed
Serious collisions
1,199
1,382 seriously injured
Collisions in 2025
103
Up 29% on 2024
Casualties in 2025
125
Up 23% on 2024

Road collision statistics for SL3

Collisions by severity, 1979 to 2025

  • Fatal1571.9%
  • Serious1,19914%
  • Slight6,96384%

What the data shows

  • SL3 had 1,049 collisions from 2016 to 2025, 39% fewer than the 1,718 from 2006 to 2015.
  • 16% of collisions in SL3 were fatal or serious, against 20% across Great Britain.
  • 1,054 children under 16 were killed or injured in SL3, 9.7% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 30% of collisions in SL3.

Where SL3 ranks among 2,813 postcode districts

Most collisions
105th
Most casualties
92nd
Most fatal collisions
57th
Most serious collisions
206th

Collisions by day of the week

  • Monday1,161 (14%)
  • Tuesday1,264 (15%)
  • Wednesday1,249 (15%)
  • Thursday1,284 (15%)
  • Friday1,421 (17%)
  • Saturday1,021 (12%)
  • Sunday919 (11%)

Light conditions

  • Daylight5,817 (70%)
  • Dark, street lights lit2,084 (25%)
  • Dark, no street lighting279 (3.4%)
  • Dark, lighting unknown90 (1.1%)
  • Dark, street lights unlit48 (0.6%)
  • Not recorded1 (under 0.1%)

Type of road

  • Single carriageway4,905 (59%)
  • Dual carriageway2,778 (33%)
  • Roundabout539 (6.5%)
  • One way street or slip road87 (1%)
  • Not recorded10 (0.1%)

Speed limit at the scene

  • 20 mph63 (0.8%)
  • 30 mph3,714 (45%)
  • 40 mph1,223 (15%)
  • 50 mph120 (1.4%)
  • 60 mph1,037 (12%)
  • 70 mph2,161 (26%)
  • Not recorded1 (under 0.1%)

Weather at the time

  • Fine, no high winds6,781 (82%)
  • Raining, no high winds980 (12%)
  • Fine with high winds99 (1.2%)
  • Raining with high winds79 (0.9%)
  • Fog or mist58 (0.7%)
  • Snowing, no high winds31 (0.4%)
  • Snowing with high winds6 (0.1%)
  • Other187 (2.2%)
  • Not recorded98 (1.2%)

Who was hurt

  • Car occupant7,435 (67%)
  • Motorcyclist1,193 (11%)
  • Pedestrian954 (8.5%)
  • Cyclist858 (7.7%)
  • Van occupant362 (3.2%)
  • Goods vehicle occupant (over 3.5 tonnes)142 (1.3%)
  • Taxi or private hire car occupant75 (0.7%)
  • Bus or coach occupant60 (0.5%)
  • Minibus occupant39 (0.3%)
  • Other vehicle occupant32 (0.3%)
  • Other6 (0.1%)
  • Not recorded7 (0.1%)

Source: Department for Transport, STATS19 road safety data

SL3 road accidents by year

Collisions and casualties in SL3, 1979 to 2025

Collisions in SL3 peaked at 249 in 1987; 2025 had 103.

  • Collisions
  • Collisions in 2025: 103
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
2025103125
202480102
202389110
202298119
202183111
20205870
2019117154
2018124159
2017133203
2016164225
2015193277
2014144208
2013158250
2012161221
2011174252
2010181249
2009154221
2008173234
2007178246
2006202289
2005203283
2004185238
2003182242
2002230288
2001207288
2000236324
1999215302
1998230293
1997202271
1996217296
1995206276
1994192248
1993210295
1992189234
1991187246
1990208272
1989222287
1988207279
1987249321
1986215275
1985204276
1984225293
1983217277
1982196240
1981185253
1980136169
1979197272

Map of recent crashes in SL3

Map of the 24 most recent crashes in SL3

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

  • 24 crashes
  • Serious
  • Slight

Recent road crashes in SL3

The 24 most recent collisions in SL3 happened between 21 October and 28 December 2025.

Severity

Crashes by road in SL3

The A4 has the most collisions in SL3, 1,456 of 8,319 (18%), followed by the M4 (1,173).

Collisions in SL3 on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA41,4561,90225223
2ndM41,1731,88830134
3rdM258201,108791
4thB47077798214123
5thB3764536011090
6thA4124486512283
7thM4098149311
8thB302179108112
9thA3113567304
10thB3026344714
11thB3378303505

Council areas covering SL3

Collisions in SL3 were recorded in 6 council areas. Slough has 4,367 of 8,319 (52%).

Collisions in SL3 by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stSlough4,3675,67365596
2ndWindsor and Maidenhead1,6672,34544265
3rdBuckinghamshire1,2531,78039219
4thHillingdon629845371
5thSpelthorne394509646
6thHavering3300

Towns in SL3

Collisions in SL3 were recorded in 7 towns, led by Slough (3,279) and Datchet (683).