Road
Crashes on the B4478
27 recorded collisions since 2000.
27
All crashes
1
Fatal
1
Serious
25
Slight
Since 2000 the B4478 has seen 27 collisions, 1 of them fatal and 1 serious. That ranks it 4312th of 6,754 numbered A, B and M roads by total recorded collisions. Its fatal rate is 37 per 1,000 collisions, and 7% caused death or serious injury. Collisions have fallen by about 67% since 2000, from 3 to 1 in 2023. The heaviest local concentrations are in Blaenau Gwent.
Worst local authorities on the B4478
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Crashes by year
2000–20246420
20002010
Figures cover collisions reported to police (STATS19) from 2000 onward. Source: DfT STATS19, Open Government Licence v3.0.