Road
Crashes on the B4009
900 recorded collisions since 2000.
900
All crashes
15
Fatal
165
Serious
720
Slight
Since 2000 the B4009 has seen 900 collisions, 15 of them fatal and 165 serious. That ranks it 560th of 6,754 numbered A, B and M roads by total recorded collisions. Its fatal rate is 16.7 per 1,000 collisions, and 20% caused death or serious injury. Collisions have fallen by about 54% since 2000, from 41 to 19 in 2024. The heaviest local concentrations are in South Oxfordshire, Buckinghamshire and West Berkshire.
Worst local authorities on the B4009
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Crashes by year
2000–2024100500
200020052010201520202024
Figures cover collisions reported to police (STATS19) from 2000 onward. Source: DfT STATS19, Open Government Licence v3.0.