You are not permitted to download, save or email this image. Visit image gallery to purchase the image.
Emergency services were called to the crash at the intersection of Barrington St and SH76 Brougham St in Addington at about 7am on Thursday.
St John sent one ambulance, one manager and a rapid response vehicle responded to the scene.
It treated three patients – two in minor conditions and one in a serious condition, a spokesperson said.
The patient in a serious condition was transported to Christchurch Hospital.
The crash was blocking northbound traffic on Brougham St as well as westbound access to the motorway but has since reopened.
A Fire and Emergency NZ spokesperson said two appliances were sent to the scene.