Road
Crashes on the A4020
8,114 recorded collisions since 2000.
8,114
All crashes
57
Fatal
962
Serious
7,095
Slight
Since 2000 the A4020 has seen 8,114 collisions, 57 of them fatal and 962 serious. That ranks it 33rd of 6,754 numbered A, B and M roads by total recorded collisions. Its fatal rate is 7 per 1,000 collisions, and 13% caused death or serious injury. Collisions have fallen by about 60% since 2000, from 527 to 213 in 2024. The heaviest local concentrations are in Ealing, Hillingdon and Hammersmith and Fulham.
Worst local authorities on the A4020
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Crashes by year
2000–20241,0005000
200020052010201520202024
Figures cover collisions reported to police (STATS19) from 2000 onward. Source: DfT STATS19, Open Government Licence v3.0.