After reading yet another news story about someone who made an Unsignaled Lane Change and ended up in really deep trouble for other infractions (to put it mildly), I offer this public service notice.
(Oh, and you can find out what that infraction will cost you at the OJD Base Fine Schedule website.)
I know most Oregonians (including police and parking enforcement vehicles) don’t have working turn signals, or maybe there is a turn-signal force-field around the state that shuts them off, but get yours fixed, or figure out how to make them work, and then use them.
Oregon Legal Research Blog

