Road

Crashes on the A4146

1,390 recorded collisions since 2000.

1,390

All crashes

Fatal

196

Serious

1,164

Slight

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Since 2000 the A4146 has seen 1,390 collisions, 30 of them fatal and 196 serious. That ranks it 342nd of 6,754 numbered A, B and M roads by total recorded collisions. Its fatal rate is 21.6 per 1,000 collisions, and 16% caused death or serious injury. Collisions have fallen by about 75% since 2000, from 97 to 24 in 2024. The heaviest local concentrations are in Milton Keynes, Dacorum and Buckinghamshire.

Worst local authorities on the A4146

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Milton Keynes444 crashes · 4 fatal
Dacorum412 crashes · 9 fatal
Buckinghamshire299 crashes · 11 fatal
Central Bedfordshire235 crashes · 6 fatal
Hertsmere1 crashes · 0 fatal
North Hertfordshire1 crashes · 0 fatal
Monmouthshire1 crashes · 0 fatal

Crashes by year

2000–2024

100500

200020052010201520202024

Figures cover collisions reported to police (STATS19) from 2000 onward. Source: DfT STATS19, Open Government Licence v3.0.