A Brighton man has been arrested on suspicion of causing death by dangerous driving after the fatal crash on the A27 at Shoreham yesterday.
The man, 56, who was driving a Renault Clio, has been bailed until Monday 7 June, according to Sussex Police.
The crash happened just before 5.30pm on the Shoreham flyover as the Clio joined the A27 from the A283.
A 45-year-old motorcyclist from Lancing died.
Police have asked witnesses to call them on 0845 6070999.