English: An electronic reader board, or
digital sign display, at a
stop on the
Portland Transit Mall, in
Portland, Oregon. Using data from a
GPS-basedvehicle 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.
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