The road toll now stands at six after a person died in a crash between a car and a truck in the Selwyn District near Christchurch this afternoon.
Dust from a rural shingle road appears to have contributed to a young driver being killed in a collision with a second truck police fear he never saw.
A man, who police are yet to formally identify but believe is a local in his 20s, was driving on Mitchells Rd at Bankside, near Rakaia when the horror crash happened shortly after midday today.
The shingle road in the extremely dry farming area was fanning up large clouds of dust from vehicles today.
Senior sergeant Peter Stills said it appears the driver, and sole occupant of the car, has not seen the second of two oncoming trucks, which had been in the area transporting stock feed.