Officials will assess whether it can help planners and policy makers better understand how local populations move around during the course of the day and where visitors to a given area originate from.
The prospect of a Boxing Day service was first raised in 2016 when the new contract between TfL and Arriva made provision for trains to run on the bank holiday.
A planned walking and cycling bridge linking Canary Wharf and Rotherhithe has been axed by Mayor Sadiq Khan and Transport for London due to increased costs.
Work will start on an initial section between Tower Bridge and Rotherhithe Roundabout, with upgrades and changes along the route including the installation of new five new pedestrian crossings and improvements to the roundabout.
Transport for London has awarded a contract to replace dozens of 30 year old Docklands Light Railway (DLR) trains, although passengers will need to wait until 2023 before the first enter service.