Police were called to the A27 near the junction with Poling near Littlehampton.
A black MG and a silver Suzuki motorcycle collided at around 3.35pm yesterday, March 12 as they both travelled eastbound.
The rider of the motorcycle, a 31-year-old woman from East Preston, and his pillion rider, a 31-year-old woman also from East Preston, were both taken to Royal Sussex County Hospital in Brighton with serious injuries.
Witnesses should call police on 101 or email collision.appeal@sussex.pnn.police.uk quoting serial 932 of 12/3.
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