An elderly man has been seriously injured after he was allegedly struck by a car at a busy Sydney intersection.
The pedestrian was hit about 9.30am on Friday at the intersection of Wishart St and Graham Ave, Ryde.
The driver of the car, a 48-year-old man, stopped and helped the pedestrian.
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The 75-year-old man, was treated at the scene before being taken to Royal North Shore Hospital.
He remains in hospital in a serious condition.
The driver was subjected to a roadside drug test, which returned a positive result.
He was arrested and taken to Gladesville Police Station before being taken to Ryde Hospital for further testing.
Investigations are ongoing
Anyone with information is urged to contact Crime Stoppers.