NSW Police have laid additional charges after a 74-year-old male driver died in hospital following a two-vehicle crash in Gunning, north of Canberra, earlier this month.

Just after 4.30pm on Wednesday 19 July, emergency services were called to the Hume Highway, Gunning, following reports of a crash.

On arrival, officers from the Hume Police District found a semi-trailer and Toyota had collided.

The Toyota driver, a 74-year-old man, was freed by emergency services and airlifted to Canberra Hospital, in a critical condition.

The truck driver, a 50-year-old man, was not injured and charged with driving offences. He remains before the courts.

Yesterday, Sunday 30 July, crash investigators were notified the 74-year-old man had died in hospital.

As a result, two additional charges have been laid, including dangerous driving occasioning death and negligent driving occasioning death

The 50-year-old man is due to appear at Goulburn Local Court on Wednesday 30 August.