Keywords: Portland Mall digital sign.jpg digital sign display at a stop on the Portland Transit Mall in Portland Oregon Using data from a GPS-based vehicle tracking system it is giving real-time information on the approximate waiting times until arrival of the next one or two trips on each of the four TriMet bus routes serving this particular stop These new displays came into use in September 2009 replacing old CRT monitors taken out of use in January 2007 Own Steve Morgan 2009-10-11 Portland Transit Mall Transport in Portland Oregon Information displays at bus stops Liquid crystal displays at bus stations Time 16 22 |