Qld bus crash victim a 'kind hearted' kid

A teenager killed by a horrific north Queensland bus crash was a good kid and a "kind-hearted fella", his devastated father says.

Casey Stinson died in hospital after the bus left the road and overturned at Cannon Valley, near Airlie Beach, on Tuesday afternoon as he made his regular trip to TAFE.

As investigations into the crash that injured 10 others continue, Casey's father David Stinson has spoken about his family's loss and struggle to raise $10,000 for the 19-year-old's funeral.

"He was a kind-hearted fella, he was a good kid," he told Nine News.

"He was studying some hospitality and he had some aspirations to travel around Australia."

Mr Stinson said his son had a lot of mates and family, so it was important to raise enough money to give the teen a proper farewell.

A Go Fund Me page has been set up to help the family pay for the funeral.

Tributes have also been flowing on Facebook where hundreds of people have joined a tribute page featuring a slideshow of pictures of Casey.

"May you rest easy knowing you will never be forgotten," one woman posted.

"It's amazing to know he was so loved by others," a family member said.

Some passengers on the Whitsunday Transit bus suffered severe injuries, including one who lost their arm.

A 17-year-old man remains in a critical condition in Townsville Hospital, where a 25-year-old woman is in stable condition.

Two women, aged 23 and 79, and a 29-year-old man remain in a stable condition in Mackay Base Hospital.

Five passengers, including a six-month-old baby boy, have been discharged from the Mackay and Proserpine hospitals.

Queensland Premier Annastacia Palaszczuk has extended her condolences to the families of those affected by the crash.

"My thoughts are with the family of the young man who was killed in the crash and the families of those who have been injured," she told parliament.

Ms Palaszczuk also said the Department of Transport would hold a bus safety forum on Monday.

The crash has sparked renewed calls for seatbelts to be made compulsory on all buses in Queensland.

Long-time bus safety campaigner Leon Hain said the crash shouldn't have caused such severe injuries.

"People should have been belted in safely, not thrown about the bus," he told AAP.

Mr Hain also raised concerns about whether the vehicle had sufficient emergency exits.

Queensland Bus Industry Council executive director David Tape said it would support any measure that made bus travel safer.

"While this includes seatbelts, we note that this is a very complex issue and ongoing consultation with the industry is vital," he said.

Whitsunday Transit has declined to comment.

Police have been reviewing the bus's dashcam footage as part of their investigations.

Mr Stinson is desperate for answers.

"I want to know how a bus rolls on a straight bit of road," he said.