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CrashStats

A4259 accidents: crash map and statistics

Police recorded 932 collisions on the A4259 from 1984 to 2025, with 1,205 casualties. Of those crashes, 13 were fatal and 121 serious, and 15 people were killed.

In 2025 there were 18 collisions on the A4259, up 6% from 17 in 2024, with 21 casualties.

Collisions since 1984
932
1,165th highest of 4,923 roads
Casualties
1,205
1.29 per collision
Fatal collisions
13
15 people killed
Serious collisions
121
136 seriously injured
Collisions in 2025
18
Up 6% on 2024
Casualties in 2025
21
Down 13% on 2024

Crash severity on the A4259

On the A4259, 1.4% of collisions were fatal and 13% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1984 to 2025

  • Fatal131.4%
  • Serious12113%
  • Slight79886%

Where the A4259 ranks among 4,923 roads

Most collisions
1,165th
Most casualties
1,211th
Most fatal collisions
1,413th
Most serious collisions
1,641st

A4259 accidents by year

Collisions on the A4259 peaked at 46 in 2004 and were down to 18 in 2025.

Collisions and casualties on the A4259, 1984 to 2025

  • Collisions
  • Collisions in 2025: 18
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20251821
20241724
20232432
20221922
20211829
20201317
20191420
20182124
20171517
20161620
20151720
20141620
20131720
20122429
20112329
20101824
20092528
20082637
20072738
20062531
20051723
20044656
20032942
20022736
20013445
20003247
19992429
19982023
19972231
19961618
19951926
19942427
19932637
19922733
19911823
19903741
19892529
19882030
19871219
19862337
19852331
19841820

When crashes happen on the A4259

Friday has the most collisions on the A4259 (157), and 3pm to 6pm is the busiest time of day (220).

Collisions by day of the week

  • Monday134 (14%)
  • Tuesday147 (16%)
  • Wednesday143 (15%)
  • Thursday149 (16%)
  • Friday157 (17%)
  • Saturday122 (13%)
  • Sunday80 (8.6%)

Collisions by time of day

  • Midnight to 3am20 (2.1%)
  • 3am to 6am22 (2.4%)
  • 6am to 9am134 (14%)
  • 9am to noon133 (14%)
  • Noon to 3pm177 (19%)
  • 3pm to 6pm220 (24%)
  • 6pm to 9pm149 (16%)
  • 9pm to midnight77 (8.3%)

Collisions by month

  • January92 (9.9%)
  • February80 (8.6%)
  • March76 (8.2%)
  • April75 (8%)
  • May76 (8.2%)
  • June68 (7.3%)
  • July63 (6.8%)
  • August62 (6.7%)
  • September73 (7.8%)
  • October90 (9.7%)
  • November87 (9.3%)
  • December90 (9.7%)

Light conditions at the time

  • Daylight663 (71%)
  • Dark, street lights lit236 (25%)
  • Dark, no street lighting17 (1.8%)
  • Dark, street lights unlit10 (1.1%)
  • Dark, lighting unknown6 (0.6%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A4259 crashes

On the A4259, 62% of collisions happened where the speed limit was 40 mph and 67% on a dry road surface.

Speed limit at the scene

  • 30 mph236 (25%)
  • 40 mph580 (62%)
  • 50 mph58 (6.2%)
  • 60 mph19 (2%)
  • 70 mph39 (4.2%)

Weather at the time

  • Fine, no high winds781 (84%)
  • Raining, no high winds97 (10%)
  • Raining with high winds17 (1.8%)
  • Fine with high winds10 (1.1%)
  • Other11 (1.2%)
  • Not recorded16 (1.7%)

Road surface

  • Dry628 (67%)
  • Wet or damp289 (31%)
  • Frost or ice11 (1.2%)
  • Snow2 (0.2%)
  • Flood over 3cm deep1 (0.1%)
  • Not recorded1 (0.1%)

Type of road

  • Dual carriageway510 (55%)
  • Roundabout313 (34%)
  • Single carriageway103 (11%)
  • One way street or slip road6 (0.6%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A4259 crashes

Car occupants make up 59% of the people killed or injured on the A4259, followed by cyclists (13%).

Casualties by road user

  • Car occupant714 (59%)
  • Cyclist157 (13%)
  • Motorcyclist131 (11%)
  • Pedestrian131 (11%)
  • Van occupant30 (2.5%)
  • Bus or coach occupant23 (1.9%)
  • Goods vehicle occupant (over 3.5 tonnes)6 (0.5%)
  • Other13 (1.1%)

Vehicles involved

  • Car1,267 (72%)
  • Pedal cycle161 (9.1%)
  • Motorcycle140 (7.9%)
  • Van or goods vehicle up to 3.5 tonnes82 (4.7%)
  • Bus or coach38 (2.2%)
  • Goods vehicle over 3.5 tonnes29 (1.6%)
  • Other44 (2.5%)
  • Not recorded2 (0.1%)

Casualties by age

  • 0 to 522 (1.8%)
  • 6 to 1025 (2.1%)
  • 11 to 1578 (6.5%)
  • 16 to 20203 (17%)
  • 21 to 25135 (11%)
  • 26 to 35243 (20%)
  • 36 to 45198 (16%)
  • 46 to 55128 (11%)
  • 56 to 6587 (7.2%)
  • 66 to 7553 (4.4%)
  • Over 7532 (2.7%)
  • Not recorded1 (0.1%)

Drivers, passengers and pedestrians

  • Driver or rider798 (66%)
  • Passenger276 (23%)
  • Pedestrian131 (11%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A4259

Map of the 25 most recent crashes on the A4259

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

  • 25 crashes
  • Serious
  • Slight

A4259 crashes by council area

All 932 collisions on the A4259 were in Swindon.

Collisions on the A4259 in each area, 1984 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stSwindon9321,20513121

A4259 crashes by town

Of the 932 collisions on the A4259, 702 were in the built-up area of Swindon, Swindon.

Recent crashes on the A4259

These are the 25 most recent collisions on the A4259, from 23 June 2024 to 27 December 2025.

Severity