A cyclist says he narrowly avoided a head-on collision with a car when its driver recklessly steered the vehicle down a separated two-way bike path in central Sydney.

Gibin Kaduvannoor John, a hospital clerk whose daily cycling commute takes him between Redfern and St Leonards, says he "nearly got killed" riding in the bike path at the intersection of Liverpool and Kent streets in the CBD earlier this month.

Mr Kaduvannoor John captured the terrifying moment a white SUV drove towards him, taking a right turn inside the concrete barrier separating the bike lane from the rest of the road, on his handlebar cam.

"I was so lucky that day," he said. "I was stopping at that signal to take a right turn. If I didn't stop to take the right turn then I would have hit the car for sure.