Parents are being urged to hide their car keys after two young sisters took their parents' cars and crashed into each other.
The 12-year-old and 14-year-old were both hospitalised with injuries from the collision, west of Hamilton on Monday.
Waikato road policing manager Inspector Marcus Lynam said officers were called by a local resident before the crash on Te Kowhai Rd.
"A member of the public had phoned 111 concerned about the driver of a blue Ford Falcon who had nearly hit her, and said the driver couldn't see over the steering wheel.
"Then, a short time later this vehicle collided head-on with a Nissan Bluebird coming out of a driveway.''