A cyclist has captured the terrifying moment he was hurled over the windscreen of a car after a collision at an intersection on Sydney's lower north shore.

Gladesville resident Paul Ludlow said the footage doesn't just show how lucky he is to be alive - it also convinced police that he had not broken the law.

Mr Ludlow was riding home from work earlier this month when a driver allegedly pulled out in front of him at the intersection of West and Falcon streets in Crows Nest.

"He had a green light, I had a green light. We were both coming towards each other but he should have given way to me coming through the lights but for whatever reason he didn't see me," Mr Ludlow said.