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CrashStats

CB4 road accidents: crash map and statistics

Police recorded 5,322 road traffic collisions in the CB4 postcode district, Cambridge, from 1979 to 2025, and 6,154 people were killed or injured in them. Of those collisions, 37 were fatal and 963 were serious.

In 2025 police recorded 50 collisions, up 2% on 2024 (49).

Collisions since 1979
5,322
483rd highest of 2,813 postcode districts
Casualties
6,154
1.16 per collision
Fatal collisions
37
39 people killed
Serious collisions
963
1,006 seriously injured
Collisions in 2025
50
Up 2% on 2024
Casualties in 2025
60
Up 11% on 2024

Road collision statistics for CB4

Collisions by severity, 1979 to 2025

  • Fatal370.7%
  • Serious96318%
  • Slight4,32281%

What the data shows

  • CB4 had 676 collisions from 2016 to 2025, 30% fewer than the 964 from 2006 to 2015.
  • 19% of collisions in CB4 were fatal or serious, against 20% across Great Britain.
  • 680 children under 16 were killed or injured in CB4, 11% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 28% of collisions in CB4.

Where CB4 ranks among 2,813 postcode districts

Most collisions
483rd
Most casualties
662nd
Most fatal collisions
1,608th
Most serious collisions
436th

Collisions by day of the week

  • Monday791 (15%)
  • Tuesday866 (16%)
  • Wednesday842 (16%)
  • Thursday878 (16%)
  • Friday943 (18%)
  • Saturday599 (11%)
  • Sunday403 (7.6%)

Light conditions

  • Daylight3,832 (72%)
  • Dark, street lights lit1,290 (24%)
  • Dark, lighting unknown101 (1.9%)
  • Dark, no street lighting58 (1.1%)
  • Dark, street lights unlit40 (0.8%)
  • Not recorded1 (under 0.1%)

Type of road

  • Single carriageway4,029 (76%)
  • Roundabout621 (12%)
  • Dual carriageway445 (8.4%)
  • One way street or slip road167 (3.1%)
  • Not recorded60 (1.1%)

Speed limit at the scene

  • 10 mph3 (0.1%)
  • 20 mph149 (2.8%)
  • 30 mph4,458 (84%)
  • 40 mph185 (3.5%)
  • 50 mph14 (0.3%)
  • 60 mph244 (4.6%)
  • 70 mph268 (5%)
  • Not recorded1 (under 0.1%)

Weather at the time

  • Fine, no high winds4,186 (79%)
  • Raining, no high winds589 (11%)
  • Fine with high winds123 (2.3%)
  • Raining with high winds72 (1.4%)
  • Fog or mist32 (0.6%)
  • Snowing, no high winds23 (0.4%)
  • Snowing with high winds3 (0.1%)
  • Other145 (2.7%)
  • Not recorded149 (2.8%)

Who was hurt

  • Cyclist2,312 (38%)
  • Car occupant1,947 (32%)
  • Motorcyclist1,011 (16%)
  • Pedestrian600 (9.7%)
  • Van occupant94 (1.5%)
  • Bus or coach occupant65 (1.1%)
  • Taxi or private hire car occupant37 (0.6%)
  • Goods vehicle occupant (over 3.5 tonnes)35 (0.6%)
  • Other vehicle occupant18 (0.3%)
  • Minibus occupant16 (0.3%)
  • Other6 (0.1%)
  • Not recorded13 (0.2%)

Source: Department for Transport, STATS19 road safety data

CB4 road accidents by year

Collisions and casualties in CB4, 1979 to 2025

Collisions in CB4 peaked at 184 in 1990; 2025 had 50.

  • Collisions
  • Collisions in 2025: 50
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20255060
20244954
20236272
20226981
20216171
20205154
201989100
20186987
201791105
20168587
20158497
201487101
201394104
20127587
201196107
2010101116
2009112134
2008102118
200798111
2006115128
2005131155
2004119133
2003130152
2002134156
2001144184
2000124146
1999133159
1998173194
1997138168
1996168192
1995158182
1994141167
1993156174
1992144162
1991155181
1990184208
1989140161
1988158189
1987159184
1986145159
1985137161
1984140158
1983149181
19828693
19818494
198092111
19796076

Map of recent crashes in CB4

Map of the 24 most recent crashes in CB4

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

  • 24 crashes
  • Serious
  • Slight

Recent road crashes in CB4

The 24 most recent collisions in CB4 happened between 15 July and 20 December 2025.

Severity

Crashes by road in CB4

The A1134 has the most collisions in CB4, 1,005 of 5,322 (19%), followed by the A1309 (572).

Collisions in CB4 on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA11341,0051,1284147
2ndA1309572684398
3rdB10495606531104
4thA1303406439174
5thA14167263622
6thA109611007
7thA455477518
8thA1307323715
9thA6034401
10thA6043710
11thB10473310

Council areas covering CB4

Collisions in CB4 were recorded in 3 council areas. Cambridge has 4,675 of 5,322 (88%).

Collisions in CB4 by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stCambridge4,6755,30926859
2ndSouth Cambridgeshire63983711104
3rdEast Cambridgeshire6600

Town in CB4

Of the 5,322 collisions in CB4, 4,953 (93%) were in Cambridge, Cambridge.