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CrashStats

DT4 road accidents: crash map and statistics

Police recorded 4,861 road traffic collisions in the DT4 postcode district, Dorset, from 1979 to 2025, and 5,983 people were killed or injured in them. Of those collisions, 59 were fatal and 812 were serious.

In 2025 police recorded 70 collisions, up 21% on 2024 (58).

Collisions since 1979
4,861
601st highest of 2,813 postcode districts
Casualties
5,983
1.23 per collision
Fatal collisions
59
62 people killed
Serious collisions
812
880 seriously injured
Collisions in 2025
70
Up 21% on 2024
Casualties in 2025
84
Up 29% on 2024

Road collision statistics for DT4

Collisions by severity, 1979 to 2025

  • Fatal591.2%
  • Serious81217%
  • Slight3,99082%

What the data shows

  • DT4 had 591 collisions from 2016 to 2025, 32% fewer than the 871 from 2006 to 2015.
  • 18% of collisions in DT4 were fatal or serious, against 20% across Great Britain.
  • 959 children under 16 were killed or injured in DT4, 16% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 25% of collisions in DT4.

Where DT4 ranks among 2,813 postcode districts

Most collisions
601st
Most casualties
704th
Most fatal collisions
952nd
Most serious collisions
708th

Collisions by day of the week

  • Monday671 (14%)
  • Tuesday727 (15%)
  • Wednesday709 (15%)
  • Thursday715 (15%)
  • Friday793 (16%)
  • Saturday730 (15%)
  • Sunday516 (11%)

Light conditions

  • Daylight3,702 (76%)
  • Dark, street lights lit1,066 (22%)
  • Dark, street lights unlit34 (0.7%)
  • Dark, no street lighting32 (0.7%)
  • Dark, lighting unknown27 (0.6%)

Type of road

  • Single carriageway4,136 (85%)
  • One way street or slip road362 (7.4%)
  • Roundabout329 (6.8%)
  • Dual carriageway18 (0.4%)
  • Not recorded16 (0.3%)

Speed limit at the scene

  • 10 mph1 (under 0.1%)
  • 20 mph33 (0.7%)
  • 30 mph4,487 (92%)
  • 40 mph42 (0.9%)
  • 50 mph172 (3.5%)
  • 60 mph125 (2.6%)
  • 70 mph1 (under 0.1%)

Weather at the time

  • Fine, no high winds4,084 (84%)
  • Raining, no high winds539 (11%)
  • Fine with high winds59 (1.2%)
  • Raining with high winds48 (1%)
  • Fog or mist24 (0.5%)
  • Snowing, no high winds8 (0.2%)
  • Other86 (1.8%)
  • Not recorded13 (0.3%)

Who was hurt

  • Car occupant2,271 (38%)
  • Pedestrian1,372 (23%)
  • Motorcyclist1,226 (20%)
  • Cyclist778 (13%)
  • Bus or coach occupant127 (2.1%)
  • Van occupant95 (1.6%)
  • Taxi or private hire car occupant50 (0.8%)
  • Minibus occupant31 (0.5%)
  • Other vehicle occupant19 (0.3%)
  • Goods vehicle occupant (over 3.5 tonnes)8 (0.1%)
  • Other6 (0.1%)

Source: Department for Transport, STATS19 road safety data

DT4 road accidents by year

Collisions and casualties in DT4, 1979 to 2025

Collisions in DT4 peaked at 197 in 1979; 2025 had 70.

  • Collisions
  • Collisions in 2025: 70
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20257084
20245865
20237181
20225972
20213741
20203950
20195679
20186583
20176684
201670114
20157190
20147685
201386101
201280105
201186107
2010108130
200991105
200896123
200787106
200690105
2005114137
200493114
2003125156
2002112147
2001130154
2000127164
1999136171
1998128163
1997111139
1996125163
1995108138
1994110138
1993119147
1992130166
199197120
1990103126
1989100121
1988112131
1987116135
1986137158
1985147176
1984142164
1983136160
1982135166
1981161197
1980148184
1979197238

Map of recent crashes in DT4

Map of the 24 most recent crashes in DT4

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

  • 24 crashes
  • Serious
  • Slight

Recent road crashes in DT4

The 24 most recent collisions in DT4 happened between 18 August and 31 December 2025.

Severity

Crashes by road in DT4

The A354 has the most collisions in DT4, 1,561 of 4,861 (32%), followed by the B3157 (593).

Collisions in DT4 on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA3541,5611,96127280
2ndB31575937056106
3rdA353296397139
4thB3156108130126
5thB31558096113
6thB3159475518
7thA3540445618
8thB3154404406
9thB3153151501

Council areas covering DT4

Collisions in DT4 were recorded in 2 council areas. Dorset has 4,855 of 4,861 (99.9%).

Collisions in DT4 by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stDorset4,8555,97759811
2ndBournemouth, Christchurch and Poole6601

Town in DT4

Of the 4,861 collisions in DT4, 4,236 (87%) were in Weymouth.