A second bus sent from Ruse is taking the tourists hurt in the crash near Edirne back to Bulgaria, the trip organiser said. Four of the 10 injured are staying in hospital in Turkey for treatment.
The bus, travelling from Ruse to Istanbul with 51 passengers, hit a lorry at about 1:30am today.
More on this story: Bus carrying tourists from Ruse hits truck near Edirne, 10 Bulgarians hurt
The other injured people were first taken to hospital but left of their own accord. They carried on with their luggage in the new bus, which arrived late because Turkish officials spent a long time carrying out checks at the border.
The organiser also owns the bus that crashed. He was travelling right behind it, drove between the two vehicles and helped the injured.
He said the crash happened because a lorry was parked without lights on a dark stretch of road. It was raining and foggy, and other lorries were parked on the right. Crates and other items scattered around on impact, he said.
The bus that crashed has been left in a car park in Edirne.