One of the two men who died during a horrific multi-vehicle crash on the Sydney Harbour Bridge has been identified.

Four cars and a bus were caught up in the crash, killing a 51-year-old driver of a Hyundai i30 and the 44-year-old driver of a Hyundai Accent.

Police in Sydney are seeking dashcam footage from drivers who witnessed the fatal double car crash on the Sydney Harbour Bridge on Thursday, October 17.

Commuters were urged to use public transport where possible on Thursday afternoon after two people were killed in a head-on collision on the Sydney Harbour Bridge.

One person has died after a multi-vehicle crash on the Sydney Harbour Bridge. Police found three cars and a bus had collided about 1:40pm. One man died at the scene and a second is in a critical condition. NSW Ambulance paramedics are assessing a number of other patients, a NSW Police statement said.

Police investigating a double fatal crash on the Sydney Harbour Bridge yesterday are seeking dashcam footage as inquiries into the incident

The sails of the iconic Sydney Opera House will be illuminated on Friday night to welcome the royal couple, displaying a photographic montage of King Charles's previous visits to Australia, where he attended school for six months as a teenager, and has returned more than a dozen times.

A second person has died after the crash on the Sydney Harbour Bridge, police say. Emergency services were called to the bridge at about 1.40pm on Thursday, where they found three cars and a bus had collided.