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CrashStats

A403 accidents: crash map and statistics

Police recorded 529 collisions on the A403 from 1979 to 2025, with 709 casualties. Of those crashes, 21 were fatal and 121 serious, and 22 people were killed.

In 2025 there were 8 collisions on the A403, up 33% from 6 in 2024, with 11 casualties.

Collisions since 1979
529
1,885th highest of 4,923 roads
Casualties
709
1.34 per collision
Fatal collisions
21
22 people killed
Serious collisions
121
151 seriously injured
Collisions in 2025
8
Up 33% on 2024
Casualties in 2025
11
Up 57% on 2024

Crash severity on the A403

On the A403, 4% of collisions were fatal and 23% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal214%
  • Serious12123%
  • Slight38773%

Where the A403 ranks among 4,923 roads

Most collisions
1,885th
Most casualties
1,901st
Most fatal collisions
938th
Most serious collisions
1,641st

A403 accidents by year

Collisions on the A403 peaked at 28 in 1982 and were down to 8 in 2025.

Collisions and casualties on the A403, 1979 to 2025

  • Collisions
  • Collisions in 2025: 8
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
2025811
202467
202322
202267
2021911
20201112
201967
20181013
2017712
201655
201588
2014911
2013810
2012815
201167
2010810
200934
20081315
20071114
20061721
20052138
20041320
2003812
20021214
200177
20001922
19991625
19981420
19971016
199634
1995711
19941420
19931011
19921014
19911117
19901321
19892030
19881112
19871013
19861517
19851519
19842738
19831313
19822836
19811518
19801016
19791623

When crashes happen on the A403

Friday has the most collisions on the A403 (105), and 3pm to 6pm is the busiest time of day (113).

Collisions by day of the week

  • Monday88 (17%)
  • Tuesday79 (15%)
  • Wednesday65 (12%)
  • Thursday94 (18%)
  • Friday105 (20%)
  • Saturday46 (8.7%)
  • Sunday52 (9.8%)

Collisions by time of day

  • Midnight to 3am10 (1.9%)
  • 3am to 6am21 (4%)
  • 6am to 9am105 (20%)
  • 9am to noon92 (17%)
  • Noon to 3pm91 (17%)
  • 3pm to 6pm113 (21%)
  • 6pm to 9pm61 (12%)
  • 9pm to midnight36 (6.8%)

Collisions by month

  • January41 (7.8%)
  • February38 (7.2%)
  • March42 (7.9%)
  • April47 (8.9%)
  • May46 (8.7%)
  • June52 (9.8%)
  • July42 (7.9%)
  • August36 (6.8%)
  • September52 (9.8%)
  • October43 (8.1%)
  • November48 (9.1%)
  • December42 (7.9%)

Light conditions at the time

  • Daylight405 (77%)
  • Dark, street lights lit70 (13%)
  • Dark, no street lighting48 (9.1%)
  • Dark, lighting unknown5 (0.9%)
  • Dark, street lights unlit1 (0.2%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A403 crashes

On the A403, 30% of collisions happened where the speed limit was 60 mph and 63% on a dry road surface.

Speed limit at the scene

  • 30 mph100 (19%)
  • 40 mph139 (26%)
  • 50 mph85 (16%)
  • 60 mph159 (30%)
  • 70 mph46 (8.7%)

Weather at the time

  • Fine, no high winds387 (73%)
  • Raining, no high winds81 (15%)
  • Raining with high winds16 (3%)
  • Fine with high winds11 (2.1%)
  • Other26 (4.9%)
  • Not recorded8 (1.5%)

Road surface

  • Dry332 (63%)
  • Wet or damp188 (36%)
  • Frost or ice5 (0.9%)
  • Snow3 (0.6%)
  • Mud1 (0.2%)

Type of road

  • Single carriageway369 (70%)
  • Dual carriageway120 (23%)
  • Roundabout38 (7.2%)
  • One way street or slip road1 (0.2%)
  • Not recorded1 (0.2%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A403 crashes

Car occupants make up 59% of the people killed or injured on the A403, followed by motorcyclists (19%).

Casualties by road user

  • Car occupant418 (59%)
  • Motorcyclist135 (19%)
  • Goods vehicle occupant (over 3.5 tonnes)44 (6.2%)
  • Cyclist40 (5.6%)
  • Van occupant29 (4.1%)
  • Pedestrian22 (3.1%)
  • Other vehicle occupant10 (1.4%)
  • Other11 (1.6%)

Vehicles involved

  • Car588 (57%)
  • Goods vehicle over 3.5 tonnes162 (16%)
  • Motorcycle136 (13%)
  • Van or goods vehicle up to 3.5 tonnes67 (6.5%)
  • Pedal cycle42 (4.1%)
  • Other vehicle15 (1.5%)
  • Bus or coach7 (0.7%)
  • Other6 (0.6%)

Casualties by age

  • 0 to 53 (0.4%)
  • 6 to 107 (1%)
  • 11 to 1517 (2.4%)
  • 16 to 20119 (17%)
  • 21 to 25109 (15%)
  • 26 to 35160 (23%)
  • 36 to 45124 (17%)
  • 46 to 5588 (12%)
  • 56 to 6561 (8.6%)
  • 66 to 7510 (1.4%)
  • Over 759 (1.3%)
  • Not recorded2 (0.3%)

Drivers, passengers and pedestrians

  • Driver or rider546 (77%)
  • Passenger141 (20%)
  • Pedestrian22 (3.1%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A403

Map of the 25 most recent crashes on the A403

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

A403 crashes by council area

Collisions on the A403 were recorded in 2 council areas. Bristol has the most, with 301, followed by South Gloucestershire (226).

Collisions on the A403 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stBristol3013871158
2ndSouth Gloucestershire2263201063

A403 crashes by town

Of the 529 collisions on the A403, 223 were in the built-up area of Avonmouth.

Recent crashes on the A403

These are the 25 most recent collisions on the A403, from 30 November 2021 to 17 December 2025.

Severity