One killed in Sydney road fog chaos Crash investigation Police are looking at the cause of a fatal crash on The Great Western Highway, Prospect overnight. Picture: Hearne Bill Source: The Daily Telegraph LAST nights fog created havoc on the roads with one person killed in a three car smash as driver visibility across Sydney was severely reduced. The front seat passenger of a white Mazda 626 was trapped and died in the wreckage after a head on crash with a black Hyundai Sonata on the Great Western Highway in Prospect about 1.30am. A dark blue Holden commodore was also caught up in the accident receiving minor damage with its three occupants walking away without injury. Three cars collided on the west bound lanes of the road during heavy fog. The three were taken to hospital to undergo mandatory blood and urine testing with the two involved in the head on collision suffering minor injuries. Friends of the people in the Mazda in which the man died came across the crash scene an hour later and pulled over and watched on from the roadside. Westbound traffic was closed as the fire brigade, police and crash investigators worked at the scene. Trucks were banked up before being given a police escort along the eastbound section of highway which remained open as investigations were carried out. Three westbound lanes of the Great Western Highway remain closed with diversions in place. Meanwhile the weather caused the early suspension of ferry services on the Parramatta River but all others are still operating. Roads and train networks are also fine, a Transport NSW spokesman said.