“City-Scale Vehicle Tracking and Traffic Flow Estimation using Low Frame-Rate Traffic Cameras” has been accepted to the workshop Combining Physical and Data-Driven Knowledge in Ubiquitous Computing, co-located with UbiComp 2019. This work is part of the Personal Energy Footprinting project, as a method for estimating building level population from local transportation. A presentation on this work will be presented at CPD 2019 in London on September 9.