The incident occurred at the corner of Liverpool St and Pine Mountain Rd about 10.46am.
Paramedics, including a critical care unit, attended the scene.
Police and firefighters also attended the scene.
The patients, believed to be two females and a male, reportedly suffered minor injuries.
A young woman was encapsulated in one of the vehicles for a short period.
She has since been freed by emergency crews.
The teens are expected to be transported to Ipswich Hospital.
ipswich hospital