So - I was thinking something embedded ish that contained a cheapo GPS chipset (probably good enough signal on the dasboard, a 2 line LCD and a keypad
something UI ish for driver along the lines of 'select route:'
and then it'd show the route, upcoming timetabled stops
backhaul to site would be GSM (should be able to transmit a small UDP packet of transponder#,Route#,Position,timestamp) to a central server.
The folks over at rpi.edu (yes, they started concerto too) already have some code that looks interesting at https://github.com/wtg/shuttle_tracking/
Question is, would it be cost effective to roll our own, and if not, who's offering the best / cheapest (open) system out there?