He is playing his first tournament since suffering serious injuries in a car accident in December 2022 that kept him out of last year's IPL as well as the 50-overs World Cup in India
Kulasekara, 34, was returning to Colombo from Kandy on Monday when the motorcyclist, travelling in the opposite direction, lost control of his bike while trying to overtake a bus and got flung into the cricketer's path.
"Kulasekara is currently enlarged on bail by the Kadawatha Chief Magistrate pending completion of the investigation," Sri Lanka cricket said in a statement.
The right-arm medium pace bowler played 21 tests but retired from the longest format in June to focus on limited overs cricket.