From the Portland Tribune:
Sometime in the next few months, the city will start using shared-lane pavement markings, known as “sharrows,” along 12 city blocks, mostly on Northwest 18th and 19th avenues. The markings will depict a cyclist as well as arrows, indicating motorists may use the lane but must yield to bicyclists.
According to Roger Geller, Bicycle Coordinator for the city of Portland,
“The intent is to show cyclists where to position themselves in travel lanes away from parked cars and let motorists know to expect cyclists will be there,” “When it works, it will function well for people riding
bikes and still work well for automobiles.”
I have never seen these markings myself, but I’m curious to see how they work in real life situations.