Road
Crashes on the A420
4,982 recorded collisions since 2000.
4,982
All crashes
74
Fatal
689
Serious
4,219
Slight
Since 2000 the A420 has seen 4,982 collisions, 74 of them fatal and 689 serious. That ranks it 69th of 6,754 numbered A, B and M roads by total recorded collisions. Its fatal rate is 14.9 per 1,000 collisions, and 15% caused death or serious injury. Collisions have fallen by about 46% since 2000, from 292 to 158 in 2024. The heaviest local concentrations are in Oxford, Bristol, City of and Vale of White Horse.
Worst local authorities on the A420
Select a local authority for its full profile.
- Oxford1,878 crashes · 10 fatal
- Bristol, City of1,159 crashes · 8 fatal
- Vale of White Horse793 crashes · 46 fatal
- South Gloucestershire510 crashes · 4 fatal
- Wiltshire400 crashes · 6 fatal
- Swindon239 crashes · 0 fatal
- Epsom and Ewell1 crashes · 0 fatal
- South Oxfordshire1 crashes · 0 fatal
- Bath and North East Somerset1 crashes · 0 fatal
Crashes by year
2000–20244002000
200020052010201520202024
Figures cover collisions reported to police (STATS19) from 2000 onward. Source: DfT STATS19, Open Government Licence v3.0.