A man rushed to Hawke's Bay Hospital after a two car crash on the Hawke's Bay Expressway yesterday is now in a stable condition.

Police were called to the scene, a couple of hundred metres after the Taradale Road roundabout, just before 6pm.

Acting Sergeant Grant Marshall said based on preliminary witness statements it appeared a car being driven southbound on the expressway just after taradale road had veered left, before driving into oncoming traffic.

He had driven into the northbound lane and "done a 360", Mr Marshall said, and oncoming cars had not had time to stop.

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An occupant of the other car appeared to be uninjured but was taken to Hawke's bay hospital.

Police are asking for any witnesses to the crash to come forward.