Is anything incumbent upon me due to the death of a passenger in another car, whose driver lost control on a dual carriageway?

You are not liable for anything resulting from the accident because the error did not originate from you, and you were not the direct cause of the killing. Rather, the other driver was the direct cause. The jurisprudential rule states: "If the direct cause and the indirect cause combine, the ruling is attributed to the direct cause." In such matters, it is necessary to refer to the Sharia courts for investigation and to issue a just ruling.