Usability 
A mobile optimized, text only version of the Chicago Transit Authority's real-time bus tracker. Drill down through the wizard style menus to select your route, direction and bus stop and the tracker will display the estimated wait time for the next bus.
Thanks to the Tracker's 19 KB maximum page size and no JavaScript dependencies it should work with all mobile browsers. Smartphone users may prefer Commuting in Chicago's iPhone obtimized tracker which uses the same data. Source: City-Go-Round