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CrashStats

A363 accidents: crash map and statistics

Police recorded 1,448 collisions on the A363 from 1979 to 2025, with 1,974 casualties. Of those crashes, 17 were fatal and 277 serious, and 18 people were killed.

In 2025 there were 15 collisions on the A363, down 52% from 31 in 2024, with 17 casualties.

Collisions since 1979
1,448
765th highest of 4,923 roads
Casualties
1,974
1.36 per collision
Fatal collisions
17
18 people killed
Serious collisions
277
326 seriously injured
Collisions in 2025
15
Down 52% on 2024
Casualties in 2025
17
Down 59% on 2024

Crash severity on the A363

On the A363, 1.2% of collisions were fatal and 19% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal171.2%
  • Serious27719%
  • Slight1,15480%

Where the A363 ranks among 4,923 roads

Most collisions
765th
Most casualties
758th
Most fatal collisions
1,125th
Most serious collisions
781st

A363 accidents by year

Collisions on the A363 peaked at 65 in 1979 and were down to 15 in 2025.

Collisions and casualties on the A363, 1979 to 2025

  • Collisions
  • Collisions in 2025: 15
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20251517
20243141
20232329
20221720
20211619
20201415
20192027
20182328
20171720
20163343
20152633
20142735
20133849
20122128
20112022
20101826
20092535
20082337
20072225
20062432
20053555
20043654
20032835
20022638
20013045
20002637
19993049
19983447
19973656
19962935
19952733
19942435
19932024
19922526
19913141
19903657
19893954
19882952
19874767
19864757
19854361
19845369
19833849
19825168
19815576
19805580
19796593

When crashes happen on the A363

Tuesday has the most collisions on the A363 (238), and 3pm to 6pm is the busiest time of day (340).

Collisions by day of the week

  • Monday198 (14%)
  • Tuesday238 (16%)
  • Wednesday214 (15%)
  • Thursday228 (16%)
  • Friday218 (15%)
  • Saturday194 (13%)
  • Sunday158 (11%)

Collisions by time of day

  • Midnight to 3am46 (3.2%)
  • 3am to 6am30 (2.1%)
  • 6am to 9am170 (12%)
  • 9am to noon204 (14%)
  • Noon to 3pm265 (18%)
  • 3pm to 6pm340 (23%)
  • 6pm to 9pm227 (16%)
  • 9pm to midnight166 (11%)

Collisions by month

  • January126 (8.7%)
  • February118 (8.1%)
  • March101 (7%)
  • April105 (7.3%)
  • May117 (8.1%)
  • June126 (8.7%)
  • July108 (7.5%)
  • August111 (7.7%)
  • September122 (8.4%)
  • October135 (9.3%)
  • November136 (9.4%)
  • December143 (9.9%)

Light conditions at the time

  • Daylight1,002 (69%)
  • Dark, street lights lit324 (22%)
  • Dark, no street lighting101 (7%)
  • Dark, lighting unknown11 (0.8%)
  • Dark, street lights unlit10 (0.7%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A363 crashes

On the A363, 58% of collisions happened where the speed limit was 30 mph and 62% on a dry road surface.

Speed limit at the scene

  • 20 mph4 (0.3%)
  • 30 mph835 (58%)
  • 40 mph238 (16%)
  • 50 mph31 (2.1%)
  • 60 mph313 (22%)
  • 70 mph27 (1.9%)

Weather at the time

  • Fine, no high winds1,117 (77%)
  • Raining, no high winds212 (15%)
  • Raining with high winds37 (2.6%)
  • Fine with high winds20 (1.4%)
  • Other46 (3.2%)
  • Not recorded16 (1.1%)

Road surface

  • Dry901 (62%)
  • Wet or damp496 (34%)
  • Frost or ice32 (2.2%)
  • Snow10 (0.7%)
  • Flood over 3cm deep8 (0.6%)
  • Mud1 (0.1%)

Type of road

  • Single carriageway1,186 (82%)
  • Roundabout217 (15%)
  • One way street or slip road39 (2.7%)
  • Dual carriageway3 (0.2%)
  • Not recorded3 (0.2%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A363 crashes

Car occupants make up 59% of the people killed or injured on the A363, followed by motorcyclists (17%).

Casualties by road user

  • Car occupant1,167 (59%)
  • Motorcyclist337 (17%)
  • Pedestrian221 (11%)
  • Cyclist152 (7.7%)
  • Van occupant52 (2.6%)
  • Bus or coach occupant14 (0.7%)
  • Other vehicle occupant10 (0.5%)
  • Other21 (1.1%)

Vehicles involved

  • Car1,888 (71%)
  • Motorcycle336 (13%)
  • Pedal cycle157 (5.9%)
  • Van or goods vehicle up to 3.5 tonnes148 (5.6%)
  • Goods vehicle over 3.5 tonnes66 (2.5%)
  • Bus or coach22 (0.8%)
  • Other vehicle15 (0.6%)
  • Other17 (0.6%)

Casualties by age

  • 0 to 532 (1.6%)
  • 6 to 1055 (2.8%)
  • 11 to 15112 (5.7%)
  • 16 to 20507 (26%)
  • 21 to 25255 (13%)
  • 26 to 35333 (17%)
  • 36 to 45225 (11%)
  • 46 to 55192 (9.7%)
  • 56 to 65135 (6.8%)
  • 66 to 7576 (3.9%)
  • Over 7552 (2.6%)

Drivers, passengers and pedestrians

  • Driver or rider1,293 (66%)
  • Passenger460 (23%)
  • Pedestrian221 (11%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A363

Map of the 25 most recent crashes on the A363

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

  • 25 crashes
  • Serious
  • Slight

A363 crashes by council area

Collisions on the A363 were recorded in 2 council areas. Wiltshire has the most, with 1,299, followed by Bath and North East Somerset (147).

Collisions on the A363 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stWiltshire1,2991,72713233
2ndBath and North East Somerset147245443

A363 crashes by town

Collisions on the A363 were recorded in 3 towns and built-up areas, led by Trowbridge (527) and Bradford-on-Avon (327).

Recent crashes on the A363

These are the 25 most recent collisions on the A363, from 12 September 2024 to 14 December 2025.

Severity