Images show a cement lorry at the scene where the victim was struck at 10.26am on Tuesday.
Police said enquiries are underway to trace next of kin.
The driver of the lorry stopped at the scene and has not been arrested.
Green Lanes is partly closed by Turnpike Lane station with cordons remaining in place.
Anyone who witnessed this incident or has dash-cam footage is asked to contact police on 101 or Tweet @MetCC quoting 2359/29JUN.