We fuse data from the GPS sensor reports with data from the
transportation network to create the classification feature vector.
Specifically, for the city of Chicago, Illinois, USA, we consider: (1)
real time location of public passenger buses, (2) rail line spatial
information, and (3) public passenger bus stop spatial data. In
Section 5, we will discuss the procedure to create the classification
features from GPS sensor reports and transportation network
information.