Family members and friends of Tayla Alexander, 17, and her sister Sunmara, 16, filled the public gallery in the Christchurch District Court wearing t-shirts and hoodies with pictures of the girls, their dates of birth and death.
They were told prior to the accused appearing that any outbursts would result in them being removed from the courtroom by court security and being barred from attending any future appearances.
The alleged driver of the vehicle pleaded not guilty to two charges of dangerous driving causing death, a charge of dangerous driving causing injury, and one of driving without the appropriate licence.
The case will now go to a jury trial. The defendant will appear on September 22 at 11.45am.
Until then he has been remanded at large - no bail was required.
The accused's identity is suppressed.
The family was upset with the plea and left the courtroom holding hands and comforting each other.