A man, woman and teenage girl have been killed in a two-car crash in central Tasmania that has left four others in hospital.
Their car lost control and veered into an oncoming vehicle while avoiding a solar panel which had fallen off a caravan on the Midland Highway on Friday afternoon.
One seven-year-old boy, who was in the same car as the three people who died, was rushed to hospital in a critical condition.
The man, 48, woman, 71, and 15-year-old girl died at the scene.
Three others from the second car - a man and woman, both 21, and seven-year-old girl - are in a stable condition.
Police say the driver of the car towing the caravan continued on their journey, unaware there had been a crash behind them.
The driver and his family, who were travelling with him, have been offered support.
"This is a tragedy for all three families," acting commander Kate Chambers said.
"An incident like this is distressing for everyone involved and will have a lifelong impact for so many people."
The highway, the main thoroughfare connecting Tasmania's north and south, was closed near the town of Ross for several hours.