New traffic laws are highlighted at the Oregonian and at the DMV (see their other press releases here). Old and new traffic laws here and here and here.
And here’s a traffic rule NO ONE in Portland seems to know, except for those drivers from countries where one is expected to know the Roundabout Rules (and to learn how to drive, and park, before getting a license) (e.g. UK):
When exiting a roundabout (aka traffic circle), “ALWAYS INDICATE YOUR EXIT [from the circle] USING YOUR RIGHT TURN SIGNAL.” See pages 50-51 of the Oregon Driver Manual.


