I haven't looked at it myself, but I came across the following: Old, 450Mhz, "Denver Smart Vehicle System": http://ntl.bts.gov/lib/jpodocs/repts_te/1782.htm New, Sierra Wireless, oMG (WiFi, Cellular): http://www.sierrawireless.com/newsroom/newsreleases/2014/10-14-2014-denver_regional_transportation_district_deploys_inmotion_solutions_from_sierra_wireless_for_automatic_vehicle_location_and_smart_card_payment_projects/ http://www.sierrawireless.com/productsandservices/airlink_gateways_modems_networking_solutions/inmotion_solutions/omg/ On Fri, Jan 23, 2015 at 12:33 PM, Nicholas Winn <technick@xxxxxxxxx> wrote: > Has anyone ever spent time looking into what RF, if any is being > broadcasted out of RTD buses? I am looking for a way to track RTD bus > locations and heard a rumor that someone found a way of doing this on the > 16th street mall but couldn't find the original posts regarding it. > > =) > > > ------ > > Best Regards, > > Nicholas Winn > 404.425.9530 >