Anyone with unused old-style TriMet tickets has until the end of the year to upgrade or exchange them.
In September, TriMet raised fares and switched from a zoned system to one go-anywhere fare. As a result, zone one and two tickets are no longer valid.
TriMet spokeswoman Roberta Altstadt said the old tickets can be exchanged, but only through Dec. 31.
"While we're hearing from everyday riders they've got the message, it's people who don't ride the system that often that we really need to get this word out to, because they may have them stuck away in a drawer or in their purse, and maybe just everyone once in a while," she said. "Maybe during winter weather when they take TriMet they use those tickets. And we just want to make sure that they get them exchanged in time."
Riders can upgrade old tickets on the bus by paying a little more, or they can exchange them at TriMet's ticket office in Pioneer Courthouse Square.
Back in May, TriMet stopped accepting tickets without a shiny foil strip. Those older tickets, too, can be exchanged -- but only at TriMet's ticket office -- not on the bus.