Netcare 911 paramedics and other services responded to an accident on the R21 just before the Benoni off-ramp in Witfontein, Kempton Park this morning.
Upon their arrival on scene they found that a minibus had overturned resulting in seventeen people sustaining injuries.
Two people were found to be in a critical condition while fifteen people sustained injuries ranging from moderate to serious.
All the injured people were treated on scene before they were transported to hospital.
Exact detail to the cause of the accident and preceding events will remain the subject of a police investigation.