Crashes on the A343

776 recorded collisions since 2000.

Since 2000 the A343 has seen 776 collisions, 14 of them fatal and 152 serious. That ranks it 636th of 6,754 numbered A, B and M roads by total recorded collisions. Its fatal rate is 18 per 1,000 collisions, and 21% caused death or serious injury. Collisions have fallen by about 60% since 2000, from 47 to 19 in 2024. The heaviest local concentrations are in Test Valley, Basingstoke and Deane and West Berkshire.

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