Ray Hadley has been sent this footage of a cyclist holding up traffic on the Sydney Harbour Bridge.

Instead of using the bike path, the cyclist can be seen struggling along in the southbound bus lane.

Listener Aaron was on a bus when he took the video, showing the rest of traffic speeding past them.

The fine for not using the dedicated bike lane is $1100 but, at this stage, the cyclist has not been identified.

Click PLAY below to see the video