Turning Vehicles Yield to Bicycles Dynamic Sign



The City of Portland installed a dynamic warning sign at NE Grand and Couch in Portland during the past week. The intent was to clarify the traffic control at the intersection and to warn motorists of an approaching cyclist.

Inductive loop detection is located upstream from the traffic signal by 200 feet. We have second  detector in the bike lane approximately 60 feet downstream is used to identify and confirm that all people on bicycles are approaching the signal.

The active sign is behind the no turn on red sign and the advance ctop here on red sign.

50' from the intersection you can see the bike box and the active warning sign. The arrow in the bike lane advances.

A close up of the sign shows the information. This is the same message as the MUTCD sign with the exception of the bike lane and the bicycle (the MUTCD sign is only for pedestrians). The sign is the same size as the signal head (3' x 3')

UPDATED: Video that shows the animation of the sign prior to deployment.